Amy Schumer has repeatedly run afoul of Twitter, which, really, welcome to 2017. That's not hard to do these days.
Amy Schumer has repeatedly run afoul of other comedians who've accused her of stealing jokes, the biggest sin a comedian can make other than not being funny. So, if true - and the accusations keep popping back up - that's pretty credibility-damaging.
Amy Schumer is now a target of alt-right internet ...