It seems the people making out most are the ones moving back in with their parents. Rent free and social interaction.
Obviously no one is going to check whether a couple is actually cohabitating or whether a group of friends are actually roommates. Compliance is low. But that's why this mess is dragging on forever.
While I agree that lackadaisical response is making this drag on, I don't think San Francisco contributes much to that.
Prioritizing harm reduction interventions (e.g. handing out masks) over punitive enforcement (e.g. tickets) is more of a general San Francisco policy. Still illegal.
[0] http://sfrecpark.org/AlertCenter.aspx?AID=June-1-Health-Orde...
In Denmark, private meeting has never been banned, and public meeting was limited to 10 at the strictest point.