TL;DW: Car drivers are salty about lane splitting motorcycles (and also bicycles, scooters, pedestrians, birds, small dogs, etc.) because of the Crab In A Bucket mentality. They think because their life sucks and they're suffering in traffic everyone else needs to suffer just as much, therefore splitting is "cutting in line" or "cheating" as if there is some virtue in your transit time being comparable to someone else's.
(But I did watch it anyway, because F9.)
Anyway, I read someplace several years ago and now conveniently can't find the source, if 40 or 50% or so of current urban commuters switched to motorcycles from cars, volume based rush hour congestion would be solved in most (possibly all) currently car-centric Western cities.
So go buy a motorcycle.
I'm probably preaching to the choir in this specific community, though.