That said I don't think anyone is losing their as$ that's living in the homes or renting them
Go back and see the example where in some SoCal areas the average home price is 10 times the average salary. The only way most people can qualify to buy a home is with a interest-only adjustable-rate mortgage.
When the average home price is 10x the average salary, something has to give. Either the wages skyrocket (not going to happen), people build new homes for half or less of the going rate (ditto), or home prices drop.
If someone with a $700K mortgage has their home value drop by just 5%, that's a $35,000 loss. They have no equity since they are paying only the interest. If they want to move, they have to eat that loss. Or what if their ARM rate increases? So what's going to happen at the first sign of a drop in prices or rate increases? Massive selling by the people with their interest-only mortgages. They can't afford to see if the $35,000 loss turns into $70,000 or more if prices decline further. That's only going to make things worse. If people had been putting down 20% and accumulating equity with their fixed-rate mortgage payments, they could afford to ride things out.
Renting is probably a wise idea if it can be done affordably. But I don't see how the owners can offer affordable rental rates with housing prices so high.