It's a great theory but I consider it a disability that I have to wrestle with myself _every single night_ to force myself to start doing the dishes, which I want to do but my ADHD brain doesn't find interesting enough to start doing. I can spend several minutes just physically pacing and trying to hype myself up to start on something that I _want_ to do, and it is every day, for basically every task that my brain doesn't find interesting, and it doesn't get easier.
Also, brainscans of ADHD-diagnosed individuals clearly show certain parts of the brain are under-developed compared to normal.