And it's women! Women who are doing the explaining! Women who are pressuring the "wtf" women to be nice, play nice.
It is almost always women, in my experience.
The only male I ever witnessed preaching about genderism was trans himself, so had something to gain by it.
Only women shit on other women for no reward at all - they don't even get the male approval they so crave, not really, in most cases there's no trans identified males there to witness their obedience and pat their heads.
It is like there's a little male in their heads who gives them a cookie after they do some handmaidening. 
Some psychological stuff, like their brain pathways are conditioned to release happy hormones?