Are you referring to not using AAS before reaching your genetic potential?
If that is the case, then in my opinion I believe it is bullshit.
95% of the people on this board, or any board for that matter, did not reach their "genetic potential" before using some AAS. I will admit that I am one of them.
IMO if you know what you are doing and are 20 years old or older, have at least 4 years of training under your belt, then using AAS is acceptable.
Of course, that is just my opinion.