Yeah I don't remember ever seeing the 70s or 80s guys with acne like you do today. I wonder if it's the food and all the shit that gets put in it these days?
It's more likely the difference in the cycles. Today's guys use huge doses of Androgenic drugs like Testosterone and Trenbolone, where as the 70'S guys were more into Primo, D-bol, deca, winstrol. When anti-aromatase inhibitors like Arimidex came out, guys started abusing the androgens more since they now didn't have to worry about the estrogen sides like bloating as much.