>regulating attention is the problem.

Thanks for your comment. I see this in my son, who shows signs of having ADHD. He is able to hyper focus on areas of interest which seems contrary to having ADHD. Less desired areas of interest are much harder for him to deeply focus. I try to see this as an advantage and hope that someday he will be able to exploit his hyper focus and learn to manage his distracatablity.

It's really executive function disorder and maybe something related hyperbolic discounting in the reward/habit/focus system.

There are more to ADHD than just trouble with executive functions. There are things like emotional dysregulation, rejection sensitivity, sensory processing that are also common traits among people with ADHD. Trouble with executive functions is just one aspect of the issues we, as people with ADHD face.