honestly sometimes I think this world makes no sense and is fucked up. if they were actually against Loli stuff how about fully removing any content with any character that looks younger than 18 and be done with it? which also means any character in school. because if everyone is 18 that means that everyone is in the same grade, if you got a girl that is a grade below that automatically means she's underaged XD
one part, patreon has problems with basically anything they could get sued for, or get a C&D, or a takedown, or [insert whatever possible random threat they fear].
another part, people don't really 'look 18' at a rather big variety. all them clubs downtown here have a strict ID check in place because of that. you can see some girls being really skilled with makeup etc. magically gaining 4-6 years visual within 1 hour.. and 16yo boys with a beard.
lastly, the school thing, truly an issue.. at 18 you should be past high school, mostly, or something went wrong. so any normal school would have underaged kids, mind you, no matter what age they look.