There's no reward for allowing them a platform. They are free to say what they want somewhere else. You can literally do nothing and they will pretend to be the victim, plenty try to suggest the mere existence of trans people victimizes them.

Now, I'm not saying that it's useful to be tactless, that anything goes. Obviously one should be aware of how some techniques are better than others, and how some could fuel their movement. But there's no moral or ethical reason to assume their ability to speak should be inviolable, in fact that's just tolerating harm. Ask the UK how they dissolved the British Union of Fascists: Mosley stopped appearing in public after dozens in Brighton threw bricks at his rally.