I've seen the video, and know that overall its good advice.
I think though, depending on various factors, that playing 'nice' can definitely get you further than stonewalling the cop. It all depends what you (potentially) did, who you are (being a white, upper middle class male doesn't hurt), and what you think the worse-case scenario will be.
If you've done wrong, admit it. Don't lie about it.
If you get a ticket, accept it as deserving punishment for putting other lives at risk.