I think it's true what he says.
When a dude has massive amounts of test running through his body and his sex drive is raging out of control. He's much more likely to engage in fetishes and other unsavory sexual acts, like buttfucking a man.
When these dudes have all this test running through their system, they're horny one night, lonely and bored, they will frantically go out looking for cock and hairy ass to satisfy their desires.
or settle for a coke machine

Classic Michalik story
Aspiring bodybuilders “had to find out sooner or later that the road to the title went through Dr. X’s office,” Michalik told the Village Voice in 1991. With the doctor’s lock on such high-end supplements as Primobolan and Parabolin, “nobody was gonna get to be competition size unless they put out for him.” In exchange for a stack of steroid scrips, Michalik brokered love connections for the doctor with a string of title hopefuls.
The doctor’s drugs were so powerful, “you felt them immediately in your muscles,” Michalik recalled.
And then there were their sexual side effects, including almost constant erections. “One of my friends, a former Mr. America, used to get so horny on tour that he’d f*ck the Coke machine in his hotel,” Michalik said. “Swear to God, he’d stick his dick right in the change slot and bang it for all he was worth.”