I think that has to do with the fact that the more serious sides you mentioned are what can happen in worst case scenario, but very very rare. However ball shrinkage, acne, gyno etc are more common and is to be expected. am i right? i'm right, right?
Ball shrinkage, to an extent yes, but it's not anything even remotely major. Doubt your girlfriend/wife would even notice.
Acne, it's hit or miss, some guys yes, some no, but for those that fall in yes I think more than not it's just a few bumps here and there on their back or shoulders...huge breakouts are not that common. Not saying it doesn't happen, it does, but on the whole those guys fall into the minority.
Gyno, if you use and use for years and years of cycling, at some point the odds are strong that you'll experience something in this category. Not saying you'll get full blown gyno but you may experience some swelling, itchiness or things like that. All of those things can be combated with AI's in most cases. It's when you ignore the problem, don't take precautions that things usually end up bad. Yes there are some guys who are going to get it no matter what they do, they fall into a very, very small minority. Now I've heard some people say, people who have good knowledge on this topic, that if you're a hardcore user for years that it's inevitable. I don't know if it's true or not, but there are a lot of these guys who go ahead and have their glands removed just to be safe.