Listening to it again, I thought it was unwise for MB to try to challenge Venice by asking "do you think it's right to host events and give a platform to those promoting hate speech?" and not expect her to put that into context. MB wanted Venice to answer yes or no, and didn't want her to explain that Posie hasn't been charged or found guilty of hate speech, never mind the subject matter.
I think it demonstrates how unchallenged TIM are in the media. MB wasn't able to speak over Venice and didn't have a sympathetic host to jump in to stop Venice speaking. MB therefore had to change the focus to misgendering, because it's all they have. Basically, it doesn't matter what is happening to children and to women's ability to speak, misgendering to MB is the bigger problem.