Being extreme, and "in your face" may not be he best strategy, but it has been working for quite some time for the other side.
Personally, I find it rather refreshing. Calm, dispassionate logic in the court of public opinion is a losing tactic too often these days, even if it is the morally right choice. A degree of fighting fire with fire is needed, I think. It's certainly emotionally satisfying.
Ted's no saint. He doesn't represent me (on one does, I choose my "role models" like I choose everything else). But the message is right, even if the delivery upsets the old ladies sewing circle. And if the messenger has flaws, well, find a better one, and support them instead.
Does Ted's style do more harm than good? Possibly. But at least he tries.
I'm not quite the same person I was 40 years ago, and I doubt Ted is either. And I fail to see what good it does to bring up things from then, as if they were fully relevant today. Unless, of course, they are still fully relevant today....Not everything is, you know.
I do have to wonder, how going to the draft board, wearing the most disgusting thing imaginable, and basically daring them to determine he was fit for service, how is that worse than someone with future political plans going to study abroad (and participating in anti war protests in a foreign country, NOT in this one) during their years of draft eligibility.
I don't think either one was right, but I do give more credit to the guy who fought the system for his beliefs than the guy who left the country so he didn't have to run that risk.