Well, one may not like his touching his hair every single second or other stuff like that, but what he says is not particularly gibberish. I tend to agree with the OP about people being quickly judgmental about appearances without going any further.
With that said, I admit I didn't find the time to watch it all, just some pieces here and there. It's not hugely deep (IMO), but not stupid or gibberish either.
What I do think about wisdom vs. knowledge is that, yes, in some way, the more knowledge we have and mostly the more easy/profuse access to it we have, and the least likely we are to make good use of it, which is what we can currently witness in the world as it has become (with the Internet.) Which, btw, may partially answer the other thread about having free access to everything.
Now, as I have only watched short pieces of that, I can in no way tell if that's what he was really on about too. So, disclaimers. I may have overestimated the depth. But just thought the idea of what was being discussed was not useless or dumb.