I should know. Since the late Eighties, I've been one of them. There's no use arguing with people who accuse us of being in a rut.
Ruts are comfortable places to be.
As the Duke of Wellington used to say, habit isn't second nature, it's ten times nature. When the Amherst workshop was at Amherst, us oldtimers were on automatic pilot for most of the day. We didn't have to think about locating the cafeteria, the music building or the closest liquor store. We just went there, with as little thought as the horse gives to finding his barn or the salmon to finding the stream where he was spawned. The workshop's in a different place now, so new ruts will have to be worn, but meanwhile the schedule, the faculty and the participants are pretty much the same.