Even the types of games I believe are shifting to less third spaces. Matchmaking is replacing the MMO beginner town where a lot of the socialization happens.
I'd wager a lot of it is "to protect the kids" (read: remove socialization since platforms don't want to expend the effort to police bsd actors)
This underestimates how friendships are made by younger people even via matchmaking in lobbies depending on the game.
Heck, I have friends who are slightly younger than me who made durable friendships in League via matchmaking.