Pretty well established that androgens increase pore size thus making the skin look worse.
It's also pretty easy to tell that most people (with exceptions, DJ does look ok) will rapidly age in terms of skin (especially facial) when on high androgens for a long period of time. The BB lifestyle in general is pretty hard on people. Factor in tanning, extreme diets, low fat, other drugs, etc. and things just compound in terms of dermal health.