I dont think anyone knows for sure but that could be the hypothesis he is working off of. I dont think it would necessarily be bad for you to ask for straterra (probably want to quit the caffeine first, though) because you are very quick to report bad side effects and tend to slip slowly enough to be able to catch yourself before you lose insight.
For me personally the meds cause the anhedonia and avolition when I went off meds I was working sometimes 12 hr shifts but then I went psychotic now I’m back on meds and can’t work anymore
I don’t think he has any reason to lie to you about that, but he might not be the final authority on that. I don’t know what the accepted wisdom is on that. I wouldn’t worry about it.