What a fluff piece based in some rudimentary and sensationalist glances on wikipedia or something. I'm not saying that steroids aren't bad, however, most people don't really understand them. Most people don't understand bodybuilding, or bodybuilders, either.
This is a morph. Along with the first dozen or so photos in that article. They are not real, they are retouched... making their heads smaller, muscle groups larger, adding shadows, adding veins, making waists tinier, skewing perspective to make a guy look more 'stacked,' etc. It's counterintuitive to write an article about bodybuilding and steroids when the photos aren't even real.
This isn't bodybuilding OR steroids. This is synthol, an oil that is injected intramuscular to attempt to give size. Gregg Valentino is famous for his disgusting, retarded, and embarrassing physique that he ruined with synthol, and secondarily, his talentless hack of an article in Muscular Development where he uses no grammar, intelligence, or couth, doing his best impression of Eminem (but without the beats or rhymes) to get attention.
He's been in several docs about bodybuilding and said stupid stuff like how he "injected his arms with steroids" and stuff. Now, I don't doubt that he's done some cycles of roids, because they're easy enough to get, but that's not why his arms are filled with oil and look like balloons. They've gotten infected from his antics and been drained at least once. Nasty nasty.
This is another common misconception. You don't know if someone has done a cycle of steroids. Muscle != steroid use. Now, that said, at some point one's natural muscle gain will plateau and even with dietary changes and training out the rear-end, results will slow... so lots of bodybuilders will try different ways to supplement testosterone (from HGH to andro to the synthetic testosterone prescriptions we call steroids). A steroid cycle could be as short as 1-2 months or as long as 6-12, and if done intelligently include a suite of supplements to protect from things like feminization, breast tissue growth, liver impact, muscle catabolization, depression, immune system impact, etc.
Bodybuilding or muscle mass actually doesn't impact your junk. Even steroids don't necessarily hinder any genital function if (a) you cycle them and (b) you take the additional supplements or prescriptions to prevent against feminization and other adverse effects; but even if there were effects, it is unlikely that they would decrease sex drive due to the nature of testosterone. Effectiveness perhaps. And even then, after the life of the synthetic testosterone in the body has passed and the body'd natural hormonal regulation takes over again, the body's functions (including sexual organs) would resume normally if they had changed.
Most people just don't realize that the muscular celebs that we see on TV and in movies have often done steroid cycles, and sometimes even overseen and prescribed by doctors; the steroids on the black/grey market can sometimes be prescriptions and sometimes livestock supplementation, but synthetic testosterone (and the many types of it) aren't some kind of crazy voodoo. It's something that can be controlled, used effectively and safely, has been researched, whose quality and efficacy can be monitored, and that has a place in both modern medicine and society. How do you think some celebs can go from being gaunt in a role, and then six months later gain 50lbs back and still be ripped with abs? Hello, it's not just chicken breasts.
Now, that said, some people are natural mesomorphs and gain muscle mass easily; some people don't even know it, because they've never worked out hard enough or can't see their musculature underneath their bodyfat. Those celebs that gain all that muscle in a few months for a role? THEY are gaining the muscle--their body is building it, and only with hard work and them consuming somewhere in the range of 4000-6000 calories a day, and hundreds of grams of protein. That is HARD, if you haven't ever tried it. They do work hard--even with steroids. Steroids don't just make your muscles grow, they make you work harder and your body work somewhat more efficiently to rebuild the muscular microtrauma YOU have caused by benchpressing and squatting some crazy weight. People with muscle have still earned it, whether with the assistance of their own natural testosterone or supplementing it with 'roids.
Me, I've never done any and I have no plans at the moment. Maybe after I'm 30 and my natural testosterone drops--but then I'd probably not be getting roids on the black/grey market, I'd be going to my Doc and asking for "Male Hormone Replacement Therapy," and somehow by saying that I'm depressed or have ED I'd be allowed by federal drug schedules to get some extra boost, as opposed to just saying that I wanted to enhance my physique, which supposedly should result in a denial as it would be too close to criminal use.
Steroids are criminal. Historically and presumably, it is because they pose a risk and require some complicated things like injection and cycling, or else they could be misused. And 'cause it's not like people inject botulinism to get rid of wrinkles or go and anything crazy like exorbitant elective surgery to make some skin tighter or add tiny balloons of fat or salt-water into their body...