I'll disagree with that. With a level of conditioning to that tune, kept for decades, the body can easily maintain a physique of that caliber drug free. It's conditioning, and his body has been conditioned to it for years and years.
I have a 45 year old female client that has been competing as a gymnast since she was 5. I've done her prep for 3 shows and the woman is just ripped and conditioned all year long beyond what most males are. It's because her body has been conditioned to it over time. That's why it's called condition.
Drugs are great, but they dont make or break by a long shot.