I suspect there's two reasons, but I haven't researched it:
1. Driving in Arizona is so insanely easy that cars are unlikely to break any rules, so a couple of fines don't matter.
2. California as a tech hub is willing to make life easy for these tech companies, even at the expense of their citizens.
That said, there may be more nuance to these exceptions than what the video goes into. Who knows, maybe they just pay a lump sum to cover x amount of violations.