This is actually a really good example of safe and prudent lane splitting on a surface street. Well, up until the end, but for the majority he does things very similarly to how I would.
THAT was what you consider safe and prudent and similar to what you do? Holy shit. I was cringing throughout that whole video and expecting that douche to smack into someone's car, or worse, that old lady who crossed the middle of the road. Those lanes were way too narrow for him to be lane-splitting safely. I thought we were talking about doing it on the freeway where you have a little more wiggle room.
He almost hit cars that were pulling into the next lane a few times, and even more often came really close to clipping mirrors and side-wiping cars that were leaning to the far left or right of the lane. He was dangerously weaving in and out of traffic instead of sticking to one gap and getting mad that drivers made a turn without noticing him, but why would they when they're concentrating on the cars and the lanes and not someone sprinting out of a gap between them?
I'm sorry, but that looked incredibly reckless to me.