They have done this for years with the new auto business (and other products with gas engines). California regulations add even more requirements for new vehicles sold new in the state then USDOT. They have been doing so since the 1970's. The excuse for doing so, smog in LA. Though more lately, it involves things like electric cars percentages etc.
Since few automakers want to skip out on selling new cars in California, many cars are made to comply with their regulations, increasing costs to all buyers nationwide. Though some models have California only models, probably because the extra regs, makes them too expensive for other markets. But we all pay, because having to add things, or have two models of basically the same thing is more costly.