They were involved in a supervisory role. All male or all female dorms, mandatory on-campus housing, curfews, tightly controlled visitation and social events. Now, students get to do whatever they want and are only held to account after the fact. There is a huge ethics bureaucracy with committees conducting hearings, investigations, and various other CYA activities after the shit has hit the fan.

I think university laxity peaked in the 80s. Starting in the early 90s the PC movement began to police behavior as it had from the 60s on back.

"An ounce of prevention is cheaper than a pound of cure" comes to mind.