As much as I can sympathize wicker, that's not really a fair standard. I think most of us can be opinionated about all sorts of things (music, movies, art, etc) without actually being able to make those things.
I wouldn't mind Chyoa doing what Literotica does though and allow an author to delete comments from their own chapters. Sometimes comments are just purely negative and add nothing productive.
One thing I've found in my experience with smut writing is that many folks seem to have a problem judging a thing for what it is. Some comments and criticism reminds me of a wine tasting judge who only likes Merlot. They will taste a Pinot Noir and go "Ugh, this is just awful! This doesn't taste anything like a Merlot!" Well...it isn't a Merlot!!! It has to be judged as a Pinot or the opinion means very little. But it is what it is. I try my best to dig into criticism and try to see if there is a useful nugget in it. If not, if it is just online bullying or trolling, you just have to try to ignore it and move on.