SCOTT, I worked with Robby a couple of times back then but I never was privy to his 'supplement intake' nor periods of continuous use, so I can't add anything to what you stated above, but .....
To the best of my recollection only a couple of competitors used massive dosages for long time periods back then but the ones I knew were getting periodic physicals to insure that their health wasn't deteriorating.
And I honestly don't recall any adverse health issues occuring back then, but it is possible that those adverse health problems happened much later on in their lives as a result of the doses they took many years earlier.
But the vast majority of the 'stuff' that was used back then was minor compared to what is being taken today.
Sorry .... Basic stuff here but..... nothing was 'basic' back then because everything pertaining to drugs and muscle growth was purely experimental. Most bodybuilders were walking, talking , experimental, chemistry labs.
ANd you gotta remember that roids were not illegal then and the AMA claimed that they were useless as an enhancement.
But those who used them knew better and decided that if something produced great results, it simply meant to do more of the same. And in some cases much more of the same .... regardless of the consequences that could be possible later.
Back in those early, pre-roid days most thought that bodybuilding pros would look somewhat similar to how the physique competitors appear today.
Massive size was more of a Powerlifters/Olympic lifter's build.
But all that changed over time and led us to where we find competittive bodybuilding today.
And what the future holds is anyone's guess.