I believe it still exists, it’s called “Save the World” mode, but it’s extremely background for the game, to the point where the switch port doesn’t have it, or I would’ve tried the mode by now, it appeals to me, but the Battle Royale doesn’t, so I guess I just won’t play Fortnite.
No commercials was a bonus for a bit, but I think most people actually went to streaming services because it was both cheaper than cable, and you could watch on demand instead of according to TV scheduling