I said 16% could afford a home. That has nothing to do with existing homeowners. Prop 13 even has a very salient point of keeping people as homeowners of the exact house (so no moving from house to house) for as long as possible due to when and how much the property tax is even assessed.
So much research has been done to refute your opinion about real estate pricing. It has even had a large impact on the rental market.
The exact wording from the information is "Only 16% of households could qualify to purchase a median-priced single-family home in the second quarter, the California Association of Realtors reported Friday. That’s down from 19% in the first quarter and 17% a year earlier." Furthermore "Nationally, more than a third of households could afford to purchase a $402,600 median-priced home, according to the report. For an existing single-family home at California’s median price of $830,620, buyers in the second quarter needed a minimum annual income of $208,000 to qualify for a 30-year mortgage after a 20% down payment. Loans on condos and townhouses, with a median $640,000 price, required a minimum $160,400 income."
This was an old snapshot overview of the impact from 2005 but it says "As a result of Proposition 13, there are obvious distortions in the real estate marketplace. In 2003 financier Warren Buffett announced that he pays property taxes of $14,410, or 2.9 percent, on his $500,000 home in Omaha, Nebraska, but pays only $2,264, or 0.056 percent, on his $4 million home in California. Although Buffet is known as an astute investor, the low property taxes on his California home are not attributable to his investment prowess, but rather to Proposition 13."
My comment about proud was because of how you choose to talk about it. No one in this world likes to pay property tax but for decades people have been talking about the negative impacts to prop 13. In addition it would have been one thing if this was in the 1980s as in physically but we're in the 2020s, what might have been viewed as a "stand up to the man" voter decision does not mean it would be the same now.