Well, responsibility is what you get when you're in charge. It's axiomatically correct even if it isn't necessarily helpful (in the sense that there's no guarantee that a counterfactual republican California would have done any better).

I do not think it is Democrat. It think it is because it is one party state.

Exactly. As much as Republicans and Democrats may not want to admit it, we need each other for accountability.

We need viable political choices with incentives to compete on something other than alienating voters who would be expected to vote for the other side for accountability (which mostly means we need proportional representation.)

That is not the same as needing the opposing party in America’s duopolistic system.