This is the reality. In practice, Cali makes up between 10 and 20% of the overall marketplace. Even though the regulations are often terrible for the performance of the machines themselves, manufacturers practically always design to the CARB standard. They don't retool specifically for California. In that way, California has been paving the way with emissions for as long as I've been alive. Next time you pull a spark arrestor and turn an idle screw two turns out to gain 20% more power on your weed eater or backpack blower, thank California.
Now, that said, I think the pendulum has swung about as far as it possibly can in that place, with a reckoning eventually coming. Adults will have to regain control at some point long before these standards go into effect, lest the whole place be bankrupt.
Forgetting the environmental aspect of EVs which people somehow seem unable to do, electric a far superior technology that will eventually send internal combustion engines the same way ICE sent steam engines. I do agree that we are still several major breakthroughs away from that reality really hitting home though. The efficiency, ease of manufacture, simplicity, and sheer superiority of the engines all but guarantee it.