Correct, I was only highlighting that the news story itself is way late and not really relevant as news. The research around zoning laws and their impact on housing development was known probably 5-10 years ago if not more, the state law changes passed within the past 1-2 years ago, and we are in the middle of the time period of the state enforcing all municipalities to conform or lose zoning privileges and SF nominally claims to have ratified changes to be conformant (the initial plan was rejected by the state and they submitted a revision at the deadline)
no this research is new and came out like two years ago. it was a different take on the typical research about zoning. it basically looked at the time it took project to get approved. this was a novel approach (believe it or not)