The thing that jumped out at me in this is the massive drop in the LA County (measured) population - about 400K in two years - and I dunno I'm a bit skeptical about that. You'd expect that kind of population loss to have an effect on home prices, but even with rising rates they have not come down.
Not defending the pride of LA, which I don't care about, but suspect it's just a bit of noisy data which you'd expect.