Earlier quoted context omitted.
I hesitate to write a lot of things off to COVID because, if you look at some presentations/papers from early on in the pandemic, a lot of things probably changed less than the "experts" thought they would. That said, I also see various things that were on a downward trajectory or cruising on momentum being given a downward shove by COVID.
A friend who used to run big late-night parties in San Francisco said the big change started after the 2008 recession. Many of the twentysomethings who were laid off left town, and the ones who remained were working longer hours.
There were at least two sites that I knew of for keeping track of parties (bayraves.com was one, I don’t recall the other). The scene was dying at the same time that I was aging out, but I sure miss it.
When I lived in the Midwest, the scene died when ecstasy became a known quantity in mainstream news media. The last rave that I went to (there) was loaded with a million cops. An org that offered free testing for purity / adulterants was told they’d be arrested for testing any pills. What a backward and unhelpful position to take when people may be at risk of an OD. Ecstasy was still generally clean at the time. I’d be afraid to take an unknown pill today, what with fentanyl and the like.