for the nsfw patch itself? probably just some code to halt stuff like blur for nsfw posts and the such. i dont think there is much going on changes wise with the patch. otherwise it is just built on top of the lemmy-ui. IMO
and if you want the specific issue that was this vulnerability: https://github.com/LemmyNet/lemmy-ui/issues/1895
according to these rules, its on a case by case bases that would be up to the mods/admins of what they feel about the piece and its context. if any of them dont feel comfortable with it for looking too young, will be removed. atleast that is how i read it.
e.g. the rebecca/midna shortstack argument that is brought up in these comments
https://join-lemmy.org/docs/users/04-moderation.html
from the documentation there is a way to ban a user from the site, but only admins have access to it, might be worth trying to coordinate with them to ban them
i am still around, and i do log in fairly regularly, just havent posted in a bit