B.S.
There are different types of therapy. My son did cognitive behavior therapy for his adhd, and it did help him. Also, in 2nd grade the psychologist did a program similiar to Play Attention, which you can google, which helps teach the brain how to focus. It was fun and you could see the difference in my son's IVA scores from before and after the program. The IVA helps to measure the amount of inattentiveness and impulsivity a person has.
His brain most probably learns differently from the average student, and he needs a teaching style that addresses that difference. I have my son work in spurts rather than one long sit down session. He needs to take breaks, come back and work, then break again if needed. That keeps his blood flowing to his brain, and helps to keep him able to focus.