LSD definitely had a resurgence and it's very popular again today, but it's still accurate to say it lost popularity the crackdowns at the end of the 60s.

Problem was in the 90s most North American supply was apparently coming from a couple of guys and when they got busted it almost disappeared overnight.

Yeah there was the mini resurgence in the late 80s, early 90s but I think the scene since the start of the 2010s has grown to be bigger than ever in a certain sense.

Nowadays I only ever hear people talk about it in the context of former users, or general discussion of the 70s.