I don't get it - why are people angry with her over her father's actions?
I think that this is worthy of criticism, but the problem here is that the few journalistic pieces that investigate this also push a strong anti-trans theme while also criticizing her at the same time, and at least one of them (the Graham Linehan one) is most definitely against Reddit's hate speech policy. I would not be surprised if this is the source of most of the bans, which is causing more of an uproar amongst the people who align with Graham Linehan's thinking.
There are quite a few critical pieces that I see on Reddit that are remaining up, even her name being mentioned in comments and not being banned, so I don't think this is worth the uproar that is being generated.