I think a part of it is that our country was shut down due to covid-19, and they got used to texting each other, Snapchat and TikTok.
No need to go out and buy a drink.
In 1987 i turned 20.
That era everything we did whether hanging over a buddies house, fixing cars, fishing, doing anything...
included drinking beer.
That fad is over i think.
The fad of young friends hanging out all of the time is mostly over as well i imagine.