You're right on a lot of points, but I want to quibble with this one. There are American law enforcement agencies (including some which have NEVER had an OIS or a serious assault on an LEO in the history of the entire agency) which still send LEOs to private shooting schools year after year, issue many thousands of rounds a year in practice ammo, authorize on-duty solo trips to a range of the LEO's choice for practice, purchase whatever holsters the LEOs want (subject to reasonable safety considerations), NEVER say "you're good enough already, stop with all this shooting" and generally robustly support skill at arms.
Those agencies are rare, and SFPD is definitely not one of them. But, they are out there.