For sure, if it really is ADHD, I'm all in for treatments if they work well for the patient.

It's just that so many here on HN and elsewhere think they need medicines because they have problems to focus at work or in school or while reading a book.

On a slightly different note, focus and concentration is maybe not the ideal state either. Maybe creativity (new ideas, new angles, new thoughts) will be affected which in turn reduces performance and results. As others have mentioned here is that when they take medicines they sometimes get stuck focusing on the wrong things. And even if the focus on the right thing, maybe they get stuck on the problem at hand because they do not get new influences.

Aren't persons with true ADHD often quite creative?