You're making a moral judgement here, which is both unproductive and hinges on a convenient separation between "ability to concentrate" and "proper discipline a

You're making a moral judgement here, which is both unproductive and hinges on a convenient separation between "ability to concentrate" and "proper discipline and priorities" as if they were orthogonal. A premise for Adhd is that, for some reason, developement of the latter is delayed causing an apparent lack of the former. The inpairment is in executive control itself, which is why your argument actually is in favour of diagnosis.