It actually ISN'T illegal everywhere for bikers (motor and/or cycle) to split lanes.
(the red lights he ran however, most definitely illegal).

Dangerous and stupid, well, I won't disagree with you on those counts, personally. Though I will pass on the right hand side if conditions warrant (normally only if I have a bike lane, but not always).

This particular video is pretty tame compared to some of the bike messenger videos I've seen.