Best I can find is that in 2013 [1] it was swapped for foam. But I don't think they continued that decision.
[1] https://www.theguardian.com/uk/2013/may/27/gloucestershire-c...
You're saying "good for em I say" to people who give themselves traumatic brain injuries and kill random innocent people:
https://sfist.com/2020/07/20/city-installs-raised-dots-on-do...
https://sfist.com/2019/07/20/well-known-skateboarder-tomoko-...
If they have some private hill they want to go kill themselves on, then go for it. But we shouldn't be shutting down public infrastructure for this. It would be like saying we should shut down I-95 so douchebags can drag race down it. Horrible idea all around. Having the state encourage this behavior is a great way to get more people TBIs.
Safety measures are good but this is one of the purposes of public infrastructure; to be used by the public.
Do you think they let random cars drive down the streets they're bombing on? No, they decide that they enforce their own laws.
No bystander has ever been killed in this event.
Reminds me of Cooper's Hill Cheese-Rolling and Wake. It's this race in Gloucester, England. It's been going on since the early 1800s. Folks run down a 45 degree hill for 200 yards to catch a 10 pound rolling cheese wheel. It's as dangerous as it sounds, but fun to watch [1]. Medical staff is onsite and ready for the inevitable hospital visits that follow. They swapped out the cheese for foam a decade back for safety reasons, which makes me chuckle for some reason.
If anything the SF hill bomb tradition should get adopted by the city. Give it a date and time, close down the street, get medical staff and police on site, get some minimal safety measures in place, and give residents some notice. Then is there anything to be upset about?
1. https://www.youtube.com/watch?v=KEh3wz-92i4