If you were old enough at the time you would have been saying it was "dem overregulation" when they mandated emissions controls which took the smog from choking dangerous levels to almost non-existent in places like LA today. We're a republic precisely so that places like CA which have their own constituencies and their own issues can legislate accordingly. So your imo, since you don't live there, is absolutely irrelevant.
The state still produces far more of the country's GDP than their population share, the vast majority of it from creating things, and that dramatically increased over the last 30 years you're lamenting. And it's still subsidizing most of the red states when it comes to federal tax receipts, also actually going up rather than down. How have Kansas and Mississippi and Nebraska and Alabama and.... done over the last 30 years, since they didn't "change horribly left socialist" and instead followed the path you'd advocate? Even if you throw Texas and Florida in there, the "horribly left socialists" created a whole hell of a lot more over the last 30 years than those you agree with. Hard to see how you could then, from a capitalist, conservative viewpoint, say CA is not only doing things wrong but "horribly" over the last 30 years?
California was so strong. Now everyone can work from everywhere. California's numbers will drop and the smugness will fall as many move out.