Not quite, but if one does not have ADHD or something similar, things like adderall have a very different effect than they do to someone who has ADHD.
Your apparent disbelief in ADHD doesn’t make it imaginary, by the way. Consider yourself lucky that you do not have it; I am unemployable without medication.
People without ADHD take adderall &etc for focus/performance enhancing reasons. Some get it from a friend, some are incorrectly diagnosed. I don't know if you disagree that this is the case, but I don't think it implies anything about ADHD.
Your apparent disbelief in ADHD doesn’t make it imaginary, by the way. Consider yourself lucky that you do not have it; I am unemployable without medication.