Anyone using is expected to look like Coleman. No one wants to admit they juice to look like that.
This is the most common thing I see.
No one wants to admit that they juice just to look a couple of notches above normal, they only admit it when they are so out of the norm that there's no other possible answer.
In powerlifting it's the same thing, no one wants to admit that they juiced to bench 3 1/2 plates a side or total just above average.
The old timers don't admit it because it cheapens their accomplishment. Mr. ABC 1973 never wants to admit that Mr. XYZ 1982 used the same stack and looked 10x better. No, Mr XYZ had to be using them steroids and that monkey brain GH........