I don't know much about Andre's strength feats. Was he exceptionally strong? Wrestling definitely involves lifting heavy opponents, especially in Andre's weight class. So, if he was extremely strong, I can see why despite no explicit resistance training, given his wrestling and increased HGH.
Yeah, this whole discussion is based on assuming human genetics. Every animal, without any resistance training, will develop an amount of muscle within some range. This can be massive, like for gorillas. Perhaps someday we will have gene editing that allows us to have the muscle building genes of gorillas, so we can all bench 1,000lbs with no training.
I wonder, do gorillas possess the mechanism for stimulating muscle growth via resistance training? How strong could one be with a dedicated training plan and coach?