He's going to look like a clown if he doesn't have the proof for all of his hyperbolic tweets.  I hope he does, and I'm pretty darn sure he understands slander laws and the risks of making unsubstantiated claims, but he's not helping the case until he backs everything up. As to your point, if he does show evidence and nothing is done.........him looking like a clown will be the least of our worries.