> it's a serious dysfunction [...] treated ADHD can make you productive "all the time", you end up addicted and pretty much permanently require drugs to function well

On its own, its not "a serious dysfunction". Within the context of operating within the current societal setup for a paycheck that provides basic survival needs, yeah.

It allows me to sit down and do 'something' without being taken completely off task for the rest of the day because someone kept knocking on the door or reading a hostile/complaint email. What that 'something' is is not always 'productive' but now I can do it without everyday things or upcoming events throwing me in a completely different direction.

Meds helps with the alignment issue. If you are taking meds and its making you "productive all the time" and you find yourself addicted to it, I suggest talking to your doctor about that. I had to work with CBT just to form a habit of remembering to take the medication, and it took a few years before I finally started to remember regularly. I still forget on days that dont fit into that routine