I know bro, I have the same opinion !
but some dudes here claimed his workouts looked like warm-ups because he did a lot of isolation cable movements
many roads lead to Rome my friend
plus, what you gotta remember that by the time in the 90s-early 2000s when he was winning all those masters things..........he was already in his late 40's-50 in believe
at that point he just needed to maintain an dnot get hurt (which is easy as you get up there)
im sure he spent many years doing heavy presses