i don't understand any of the points you are trying to make. it's great you can cope, either you don't have ADHD or you found ways to deal with it, but others are not you. people with ADHD struggle greatly and in a diversity of ways. a lot of people can adapt and integrate in work/social life/school way better on medication, and studies have shown the concentration and focus have increased measured cognitive benefits.

people with ADHD have decreased function of neurotransmitter activity for dopamine and norepinephrine, which is proven. i don't doubt that the future of medication will be more controlled or targeted, as we understand more, but your idea that a lack of understanding means the drugs aren't appropriate, or that ADHD isn't a disorder is basically the same thing as saying "we don't know why people consciousness exists so why bother studying it".

i personally had issues since i was not medicated for quite a number of years, mostly social and behavioural. i never was unintelligent, just had a lot of trouble focusing on tasks, prioritising, and having things in order. the pandemic and work-from-home were very hard for me, and taking stimulants again has literally opened my eyes and removed the fog of inaction. in just a few weeks i've seen huge improvements in my mood, happiness, work effectiveness, and focus, as well as thoughtfulness in conversation.

not everyone responds well to drugs, and people can cope in various ways at varying times, but that doesn't mean we should throw decades of proven methods out the window and cancel the disorder entirely. if we were only hunter-gatherers maybe it wouldn't matter, but we quite literally live in a society that demands an exceeding amount of effort 100% of the time to be successful