You have to remember that's a compilation accumulated over a period of time, I'm sure if you taped a regular street non stop for a period of time you would see similar stupidity. That's the corner where the camera's are so all the douches try to show off.
I hung out there for about two hours in February, didn't see much that would make me shake my head. Same thing for Deals Gap, been there around 6-8 times now, can't wait to go back.
It's a beautiful road outside of that one corner, as are most of the roads around southern California, can't recommend it enough. Oh and it was 80F in the beginning of February, what more could you ask for.