Does no-one on this thread have teens/early twenties DC's or relatives. I can tell you, they are well and truly done. They are (and truth be told, have been for some time), going to work, going out, dating (and snogging!) random people, going to cinemas, pubs, restaurants, out in groups, to other peoples houses in groups
Not all teens and early 20's. Maybe lots, maybe many, but not all. Some are doing all of this; some are just going to work and doing some socialising, but with caution.
I'm rarely in favour of lumping 'all' teens and young people together, in one homogeneous mass, and attaching behavioural/social/emotional trends to the lot of them, and here we are again.