Jokes aside, I quickly scrolled the anime subs I used to frequent (by hot and then top daily and top weekly) and I didn't really see noticeable change, maybe I missed a big discussion that happened during protests since I stopped using reddit since then, but I don't really see what you described.

And before the protests there was already the occasional pro loli post, of course it wasn't a flood that's why I went to check.

Maybe it's something present on smaller subs?