A Profesional Cyclist is also using and has nothing to show. That Argument is Pointless. I am not impressed by his Muscle Mass, but my Information is that he was using. I did not say that to offend you, even if i think you are the furthest away from his physique than a Human Being can be..
Depends on the cyclist and their discipline. Track sprinters clearly show. However cyclists are drug tested a lot so the usage is a lot harder to undertake than a casual athlete does. Steroids show up like a 1000W light bulb these days in the drug tests so the drugs of choice are hemoglobin related.
For endurance cyclists in the TdF for example there have been positive testes for testosterone patches, nandrolone, and a few others. They used them for recovery. But these have fallen out of favor for many years due to the aforementioned drug test info. The daily calorie burn for a Tour rider is in excess of 7500 calories a day (1000 cal per hour, 5 hour stages, plus daily BMR needs) and nobody builds mass at that level.
If Bruce used, (and people always toss that "inside info" shit around on here, lol) it didn't do anything for him. He had no need to recover from extreme calorie burns. And he sure didn't have any mass to speak of. So your theory is specious.