New Mexico and Hawaii also had quarantine restrictions on anyone arriving from out of state. it seemed to be a reasonable response to a bad situation. It also seemed to help.
I’m not convinced that better science would help. There is plenty of good science that shows that bars and restaurants spread covid. But people don’t want to believe it, so they cover their ears and say that there is no proof.
We were talking about Hawaii in the other thread. It seems to have helped but at the crippling cost of a 7 month lockdown that absolutely brought down the economy of the state. Then, when they could tolerate it no longer, the opened back up with policies that made no sense: a similar mess of education as Califoria, dining at 50% (you love that one don't you), and an airline policy that makes no sense because it means people can catch COVID on the airplane and then spread it at their hotels. In retrospect, Hawaii would have been better off targeting its lockdowns to respond to particular waves, including the current one. So as a result now they seem to be forced to give up a lot of the progress they had made.
Yes, there's plenty of evidence that bars and restaurants spread COVID. The question is how much they spread COVID. It's probably not enough to make a substantial difference.