Originally, P/L was a sport full of insurance salesmen, sales reps, teachers, and other muscleheads.
Traditionally, arm-wrestling was the blue collar sport in the 1970's and early 80's, not powerlifting.
As P/L became well-known and Inzer, Simmons and other bullshit infiltrated the sport, it became more blue-collar.
Bodybuilding was more blue collar than P/L. Obviously, that's changed.