Er... Source for this claim?
If there are people filming on their dancefloor you're in a shitty club.
OK, so the author and a handful of people they quite (including some global superstars who obviously don't represent any kind of norm) seem to be finding themselves in shitty clubs more often than they used to. And therefore we conclude all clubs are shitty now?
Nightlife is the least heterogeneous and least globalised form of public life that exists in "the west". If someone thinks they can make sweeping statements about the state of raving writ large, I don't really take them seriously.
Maybe read the article? It’s more nuanced.
We have Mets glasses now, you don’t even have to pull a phone out.
Anyone else that has been outside in the past 10 years can see it. Doesn’t have to be dancing it can be eating in a restaurant, going to a public pool, walking down the street. Younger folks absolutely are feeling the sense of everything being recorded. It sucks because you don’t know what will pop up online so a lot will not do anything (swim, dance, do anything moderately weird).