There you have it from the source, lol.
Later in the 80's, people did get clued into estrogen control, but the methods were pretty crude and not very effective. Chrysin, D-calcium gluconate et cetera were sometimes used but all in all PCT is a pretty new concept. Even now, I would venture to say that the bulk of users on the street are going without. Those actually IN the BBing community do use pct as growing boobies is rather counterproductive to the aesthetics of the sport.