I’d say they’re doing it to themselves. Feminism doesn’t come across as inclusive, and has a “fall in line or get left behind” mentality.
Even something dumb like Sokka’s character growth from being a sexist 12 year old to respecting & appreciating women was said to have gotten removed from Netflix’s Avatar TLA remake.
At some point, that rigidity is going to push people away, and it appears that it didn’t take much to push people to villainize feminism.