Everyone else testifying at that is going to be a tech CEO promising to crack down on the left or some other kind of collaborator. His testimony is at least going to be the only honest take and it might raise his profile as the only charismatic or oppositional one.

That’s assuming that the trial is televised and the media accurately reports anything he says or does. Most likely they’ll either just give no quotes from him at all, only the opposition saying things about him, or Frankenstein a quote clipped out of different unrelated things he said. They’ll talk about him a lot, but they won’t talk to him.