Obviously I support these kind of movements - the housing crisis is no joke. But every time I see an article about multifamily homes, I think: ok, but we really need is are hundreds of tall high rises with 500+ units, like in New York or Boston, each of which uses land much more efficiently than LA (2x more residents per square mile).
Notably, those cities have been very expensive for decades because they also slowed their pace of housing construction below demand.
Meanwhile, cities like Houston have kept prices down by granting tons of building permits. For the purposes of pricing (as opposed to urban design), it doesn't matter what form the new units take, as long as they get built.