If a reviewed chapter violates the rules, it gets locked and the author gets the chance to fix it.
I haven't had a case yet where it was impossible to fix such issues. (Sometimes it was just bad wording or having too detailed descriptions of the process.)
Fine, let's do examples then.
In Star Trek, the teleporters do not actually teleport you. They destroy your body while creating a "pattern" record (including brain in its current state), then send that pattern to another location where a new copy is built, molecule by molecule, after which even the original pattern is destroyed (after the 8 minute buffer period). While there is one source that I know of that says otherwise, the general consensus, supported by numerous in-canon episodes and stories, is that the original is destroyed, and a new person is created. Star Trek can actually be very dystopian if you take it too seriously.
There are several hundred stories with Star Trek characters (probably more that my quick search didn't find). Would not all of these stories violate the rule, unless they explicitly explain that they use a non-canon form of teleporter system?
There are a much smaller number of stories based on Netflix's Altered Carbon, but since that entire franchise is literally based on a violation of this rule, I assume they would get deleted unless it was made VERY clear that anyone and everyone involved was wearing a properly aged clone sleeve or resleeved into an existing person's sleeve, rather than into a synth sleeve (as the VAST majority are, for cost reasons). Canonically, this would make no sense, unless virtually every character was a Meth or original person. What about the AIs? Poor Poe...
What about Nauto's shadow clones? I can't come up with a disclaimer that gets around that one. I assume any chapter that uses them would need that content removed.
There are any number of genie stories where the genie creates a duplicate so that they can have a threesome. I assume those would have to be removed, or they'd have to clearly explain that the duplicate is a real person, with an entire real history that they just created for the purpose of this one threesome, and then later destroyed.
There are a ton of "you get godly powers" stories where the protagonist simply creates a companion for themselves, usually with no backstory or any indication of prior existence. I assume those chapters would need to be changed to include language indicating that these new people have existed for 18 years. I think in many cases that would not work, so those would need to be deleted.
The vast majority of isekai stories (regular person becomes adventurer in a new world) have the protagonist die, then their consciousness is put into a new body created at that instant by a goddess of some type. I assume these would have to be changed to indicate that that body was NOT just created, but rather that they are now displacing a person who previously lived in that body for 18 or more years.
The vast majority of stories where the protagonist "enters" a video game would probably need to be removed. Virtually all the NPCs they go around having adult situations with would only have existed for a few years, even if you treat their existence as starting at the date the programmer created them, rather than the date the specific install of the game was created. Even if you ignore that, in almost every case the protagonist goes through a character creation process, so the protagonist's body is brand new, even if the game is older than 18 years. I suspect most of these would have to be deleted, unless you add some fairly ridiculous boiler plate about character creation including an 18 year stasis period for no real reason.
etc etc etc.
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[EDIT] That doesn't even get into the VAST amount of stories that would be questionable, rather than explicit violations under this rule, which could create constant uncertainty. When you use Master PC to give someone a new body...is it a new body? How much change is required to make a body actually new? Is that just a turn of phrase?
What about your story from your signature? Is the brunette from the dream, who only seems to exist for short periods, even real? If real, does she violate the rule? The story indicates that, at least while she exists, everyone else seems to remember the fake reality as history...but if that replacement reality only existed for a day, then are their 18+ year old memories real?
What about Dragon Ball? The inhabitants seem to be constantly vaporized then wished back to life. Are those new bodies? The old bodies were definitely destroyed, and so far as I'm aware there is no explanation of if their old bodies are un-vaporized or if everyone is just wished into existence anew. What about fusions? They're two existing people, but the combination they create did not exist until just then.
Maybe it's fine, or maybe every single reality-alteration story becomes a potential philosophy argument under this rule. Why? What purpose does this actually serve? I don't think many people on this site understand how this rule is being interpreted, since it's not actually stated outside this thread, but if they WERE, would it create a significant chilling effect as people simply avoided entire topic areas for fear of maybe running into this rule, even though their content is otherwise non-objectionable? Then there are all the people who don't even read the rules. The vast majority, I believe, write their stories based on a sort of "general understanding" of what CSM is, and everyone knows to avoid it...but I guarantee you that virtually no one is including this interpretation of CSM in that general understanding.
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I assume I'll get some sort of point-by-point rebuttal. You seem to like to do that (I like to do that too, so fist-bump.gif). Maybe every one of these can be hunted down and fixed, though I suspect some can't. Why do it, though? The massive, ongoing effort, with completely legal, innocent (well, maybe not innocent), non-CSM stories constantly getting requirements to go through unnecessary edits, even when the characters have adult minds in newly created but fully adult bodies...why? What is being gained by this? There was never any risk of these being seen as CSM. Adult minds in brand new, but otherwise adult, bodies is widely accepted throughout real-life modern digital and literary culture, with no controversy. I don't see any additional legal protection provided by this rule. I get trying to protect the site, and I get being broad to cover all bases, but this is needlessly broad, and I don't see the benefit.
/not legal advice