'Looking younger' as an acne patient probably has more to do with the early skin treatment of the condition rather than 'genetics'. However, genetics does play a role in whether or not a person will develop acne or not, mild or severe, teenage or continuing as a adult
Those young people, especially men, that continue to have acne problems after their teen years and puberty have long since passed, will no doubt already be seeing dermatology while their age and skin are still young enough in order to 'bounce back' and heal after treatments.
Todays advanced skin care, including microdermabrasion will ensure a youthful appearance while aging gracefully. Basically, if you are a life long sufferer of acne, you then are a life long patient at the same time. Being a life long patient means on going skin treatments, under doctors care and or at home, everyday.
Someone who has never suffered from acne except thru the normal teenage hormonal changes, probably will not take care of their skin in adulthood the way a person who has suffered a life time of acne problems. Therefore, I debunk this story as only half truth
As a life long sufferer myself, I can without a doubt claim that throughout my teenage and adult years, the majority of my medical insurance has paid for skin care, thousands of dollars in medical skin care. Most dermatology today, only want "cosmetic" patients as it pays them the most
As a result of early and continuing skin care, I do appear to look younger than I actually am