Or that it will hurt your career if you are a writer?
You have arrived at the answer yourself.
And that's my cue!
Hi! I'm Rubicon, and have been for a while. Rubicon Cross in other places. Those places? Let me write dirty fanfic.
And
that name let me do it without involving my professional name.
Hi! I'm Kimberly Dale. I peddle smut. I had to stop for a while because of unrelated reasons. During that time, Rubicon showed up here and there. Now that I'm back, I made the scary decision to out my fan and pro sides and start the long process of healing.
And... and this can't be a surprise to anyone... if you looked at my driver's license, it won't quite match either of those names.
Only... don't look at my driver's license. That's rude, and the picture's terrible.
Why? Because there's another name out there on other books and things, and that name isn't connected to a smut peddler. And even though I honestly enjoy being a smut peddler more? That name will have issues if they become unified with Kimberly Dale and Rubicon Cross.
(Is that name on my driver's license? Why would you possibly
care?)
And just in case this isn't confusing enough? There's at least one
other name out there connected to different genres. Why? Because that way I don't have to deal with the stigma of Genre A while writing Genre B, and neither have to deal with Kimberly Dale's smut, and... you see where all this is going.
My point's this -- the people in the thread giving you advice? Are called things like Nemo of Utopia, LizardGod, and porneia. And Rubicon. And that's
fine. It's cool and fun, and we all know that's the game. And we also know that if you want to have a broader career than simply erotica... you really want to keep those separate.
tl;dr?
Don't put your real name on your smut, at least until you know that's what you want to be known for, forever and ever. That's not lying and that's not cheating. That's basic, common sense.
(Hand in hand with that? Don't ask other writers on the site to out their driver's license name. It literally doesn't matter -- you're not asking them to drive you anywhere.

)