The issues with HL and vtubers have been going on since before the game came out, and basically every part of it has made the online trans community look AWFUL.
A timeline of the big stuff:
.Pikamee talks about her excitement with the game pre-release, gets harrassed into not playing it and goes radio silent for 3 weeks.
.Silvervale plays Hogwarts Legacy, cries on stream after being harassed in chat and through DMs and takes a break
.The harassment gets covered by big streamers including Xqc and Asmongold, the latter of which gives her his full support and has triggered some good growth for her
.Many Japanese vtubers stream the game and many try to harrass them over it, but they can't speak English, so it doesn't work. The ones that do understand English just block everyone attacking them.
.People get skeptical of Silvervale's claims of harassment. Ironmouse, arguably the most respected vtuber in the English-speaking sphere, supports her and talks about her being afraid to go to sleep and how awful she feels about the whole thing.
.Silvervale returns to play more Hogwarts Legacy to massive support and calls out the terminally online "freaks" harrassing her. The people attacking her obviously aren't a fan of this, which makes said attacks more potent.
.A small vtuber announces that their cousin (who is also a vtuber) committed suicide over HL, intensifying attacks on Silver where I saw some truly heinous stuff being said.
.It turns out the small vtuber LIED about their cousin committing suicide, and said cousin does not exist and was their alt account they used to beg for money. The people attacking Silvervale did not apologize and tried to deflect, with the only thing they lamented being their lack of research of a claim that had very obvious red flags right from the beginning.
.Pikamee returns to the announcement of her retirement. Some are arguing it was finalized before the HL controversy, but even if that's true, it still caused her to not stream for nearly a month, and graduating vtubers want to spend as much time as they can streaming/with their fans when they know the end is near.
Some trans vtubers absolutely are getting harrassed, but as far as wider discourse goes, this is going to be the stuff people focus on. And no one is going to develop a hint of self-awareness to see that a lot of this is their own fault while people that have nothing to do with the shitshow will continue to suffer.