He graduated in 2008, so he's only ~23, and it's his first conference. I think he did a good job for his inexperience. It takes time to learn to calm down on stage and stay composed.

He also has a bit of lisp, so yea, that he put on such a good speech is an impressive feat of self-confidence.

Because people with lisps should default to not being confident or capable?

I don't think he's suggesting that they _should_ default to lack confidence, but rather that many are very self-conscious about it, so it's probably even more difficult for him. Hence, his performance is even more impressive.

Yeah, you're right. And it was only "like". "uhm", "uhh", "like", and "basically" can get pretty bad sometimes.