Hi Poison Ivy,
I tried to convey why I think it was bad form in my story itself. As a public speaker, I know the emotional labor it takes to confront an audience. As an events facilitator, I know the effort it takes to organize an event. These are not small efforts. That’s why few people do these things.
I believe coordinating with a speaker in advance, request some time designated to you, or ask for a share of the limelight is acceptable. But the person creating the event should have agency over the event.
Surprising a speaker with hostile questions is not good form. Talking over them — screaming over them — is not good form. Stealing their platform is not good form. Attacking a rape survivor at her event is not good form.
I agree with you that there should be solidarity between survivors. I don’t think these very hostile actions are a good way to invite solidarity.