>> Prop 13 property taxes reset on sales ... and property turnover rates in California are generally in excess of 10%. What that means is that pretty much all of the taxes are reset every 10 years or so

That would be assuming certain things, among which would be that if 10% of properties sell every year, there is a consistent 10% chance of a given property selling each year.

What I can tell you from looking at the data on all the houses in the neighborhood in which we bought our home in 2019 is that the vast majority of them had been last purchased more than 20 years earlier (and quite a few more than 30).

Given the significant economic incentives created by Prop 13, houses in appreciating areas should be less likely to turn over than ones in areas where values are relatively stable.