Replace what he calls "bodybuilding" by "physical conditionning (lifting weights naturally, doing cardio and having a decent healthy diet)" and yeah, he was right. Except he mostly did the promotion of steroid use and unhealthy "bodybuilding", not really natural healthy physical conditionning. Still, this is the direction it is headed as more and more people of all ages discover the activity.
"I" predict humans of the future will be less numerous, smarter and in pefect physical health...