Highlighting that the (good) majority should call out the (bad) minority is reasonable. Blaming the whole is not. It's true regardless of the target race, or sex, or gender, etc.
As a white male-- I have no more control over society than anyone else. I have absolutely no power over these power structures that oppress us all.
If you said that it's the respinsibility of all black people to call out black criminals for their bad behavior, you'd rightfully get called a racist.
I don't see how this is different.
I have a friend whose white, a trans woman, and who worked at Blizzard for 10 years, but was a man during that time. I swear I'm not making this up.
Assuming she did none of the actual harassing, how responsible is she now as a white trans woman, for the culture at Blizzard?