Yeah, ADHD medication is definitely a performance enhancer. I've tried it. I seem to get the best workout of my life, without trying very hard, whenever I use it. Like if I take it, and go to the gym thinking I'm just going for a casual workout, I end up doing more than I've ever done, casually. It just seems to help you go, go go.
For the people saying weed is a performance enhancer, there's two reasons why it's not on the banned list. First, because it's not actually proven to be a performance enhancer. More like, people have the perception that it is a performance enhancer, but actual tests show that it does not improve reaction time, but might slow it down. Does not increase endurance, test show that people get tired more easily on weed. But it makes people feel good, and makes them feel like they are in a flow. It does have pain relieving properties, which is why some might consider it a performance enhancer. In low doses, the pain relieving properties aren't that great. If you take enough to get significant pain relief, you are probably sacrificing reaction time, altertness, balance, etc. Basically, you kind of have to get drunk on it to really get a lot of pai relief. Second reason it's not banned is likely because its use is so wide spread, they just decided to allow it. If it is a PED, it's not a strong one, and "everyone" uses it, so whatever. It's not making you stronger or faster. But ADHD medication though, aka methamphetamine, does indeed have performance enhancing qualities. Careful with it though. It is actually highly addictive.
I have a hard time believing the Simone Biles story. I don't see how a person can become an olympic champion and claim they NEED medication to help them with focus. Like you don't have to focus, and be extremely consistent to become the best in the world at something? Personally, I think anyone who uses adhd meds in high level sports, is probably knowingly using it as a ped.