I respectfully see your argument, BUT, and feel free to give you input, I think alot of people that "should be prescribed", what I consider pharmaceutical meth, I think this dude needs to just push away from being so isolated and just interact with others occasionally and also just eat healthy and exercise regularly. He may be in the outlier where a heavy duty stimulant actually makes a person operate normally, but if he's losing sleep the whole point of that drug is lost on him. Edit: He could also be abusing his meds too, which isn't good at all, but he's a retard so if he is doing that's not good at all, it's something he shouldn't have been prescribed in the first place.
I'm not a professional on this stuff, but I always thought those drugs were meant to allow a person to operate normally and also be able sleep on a normal schedule. Again, that's how I always look at said drugs like that, but if I'm wrong please elaborate because I have no problem admitting I'm a retard.
Edit: To elaborate, I was always under the assumption the entire point of said drugs were to normalize a person's behavior and allow them to act like a "normal" person.