Arnold competed in Olympic WEIGHTLIFTING at that time. NOT BODYBUILDING. Everybody you have mentioned you said did them at ONE point. They didn’t do them WHILE THEY WERE…BODYBUILDING.
I DON’T SEE ANY PROS DOING ANY KIND OF SNATCHES OR CLEANS!!! BECAUSE THEY DON’T !!!
You found one person who did, Phil Heath. The first and only who actually used it “apparently” in his bodybuilding routine; and that wasn’t something he did consistently.
His workouts are always the very basic movements - he doesn’t waste his time doing Olympic Lifting, Olympic lifts are for olympic lifts , not for bodybuilding, the same way bodybuilding movements are for bodybuilding, not olympic lifting.
Hell guys, let’s all go get huuuuuuuuge off Clean and Pressing 400+ pounds! Seems like it’s really making some of those Olympic competitors become total mass monster freaks./sarcasm
Olympic lifters have nothing even remotely close to being ‘bodybuilding’ big except quads and gasp they do TONS and TONS of front and back squats, a widely used BODYBUILDING movement.