Sure. I guess my point was really aiming at non-experts in the field of psychology (like well-meaning but misguided teachers) trying to diagnose a kid based on their own faulty notions of what constitutes AS or ADHD. Not every kid with a lot of energy has ADHD, and not every kid who is quirky has AS.
I really like Dr. Webb's points that not eveything quirky requires a diagnosis, and even someone who shows signs that could conceivably lead to diagnosis might have something else wrong if the symptoms aren't reasonably consistent. I think we pathologize a lot in our culture.
A kid who shows the signs of something resembling AS only three days a week (and whose dad happens to be an expert on AS!) may not require a diagnosis so much as a change in approach. Clearly something isn't working, but is it the kid's problem if he's perfectly fine 4 days a week? Or is it that the school situation not fitting the kid's needs?
I'd argue for the latter, but then I usually do...
That's not to say that symptoms of something like an LD are always 100% consistent in a kid. I don't think that was Dr. Webb's point and I definitely agree with you that it isn't accurate.