Even I'm tired of talking about beck. But dude, we all know what's going here. Beck doesn't convert people. He's popular as shit with his audience because his show is one big confirmation of everything they already thought. We know that he brings up facts but we ALL (including his fans) know that he acts like a complete jackass lunatic.
I know that you can see that a lot of his chalkboard shenanigans are completely asinine, but I also get that his overarching message is something you were already on board with, so it gets overlooked. It is what it is. He's not a threat, political zealots are a threat, and they just happen to be in his audience.
Also, in regards to the 10% thing, it's obvious what he's suggesting. Let's not bullshit about it. It's what he does. He makes suggestions, not hard claims, which is why they aren't disproved. I never said he isn't good at what he does.