The Marin County Board of Supervisors should step back from the detailed arguments about short-term rentals and look at the big-picture impacts of coastal S.T.R.s on our vulnerable coastal communities. These villages are most easily damaged by housing shortages because they are too far for workers to commute to from population centers in other counties. Supervisors agreed with this basic point at a May meeting on the Housing Element.  

The ordinance approved by the…