Absolutely, you're right that he hasn't destroyed the liberty movement or anything along those lines. However, there are good and bad ways to present arguments. I'm absolutely fine with sandbagging and dragging the other guy through the mud, as long as it makes you look good on the TV to do so. They're going to fight dirty, and it's absolutely fine to fight fire with fire, the problem is you have to be better at it than them.
Getting angry like that? That's a sign that the other guy has won for the most part. Credibility is gone. Association becomes toxic, etc.
I have no problem with passion, but if you step up to the range all excited and fire all over the place instead of hitting the bullseye repeatedly? That gets chalked up as a loss.