Fat chance of this changing anything. Berkeley is liberalism run amok. Unless you already own property in one of the shrinking "nice" parts it's not that nice of a place to live, and loosely committing to allowing multifamily zoning is not going to change that.

I'll bet money that even if the commitment turns into law in 2022, it will still cost north of $1,000,000 to actually construct or convert a multifamily property due to ridiculous permitting costs that you can't see up front.