And some have all 320s, and a surprising number are buying mostly vinyl. But everyone uses YouTube to listen to tracks they don't own, aren't available to stream (many, for Spotify), or are vinyl-only. It's always the go-to for house parties.
There's a lot of variety out there, but you're right, YouTube is the backstop.
Yes, lots of people use YouTube. But bsder claimed that everyone in that demographic that they know goes "straight" to YouTube, and I was presenting the countering anecdote that I know loads of people in that demographic who use YouTube as the backstop, not the first stop.
On the house party subject, my roommates and I in college through roughly weekly parties, ranging from a few people to several hundred people, and we defaulted to Spotify (but used lots of other things as well). We could have definitely been an outlier, though, as I agree lots of people default to YouTube there.
There's a lot of variety out there, but you're right, YouTube is the backstop.