I did click on your link before, but I guess I did not really read it because I should have noted that the first sentence in that section states exactly my opinion on the issue.

Stimulants are often seen as smart drugs, but may be more accurately termed productivity enhancers. Some stimulants can enhance cognition and memory in some people, but cause psychosis in others.[citation needed] They generally have a very substantial side-effect profile and are not considered classical "nootropic" drugs.

I would guess you probably agree with regard to the side-effect profile and so maybe this just boils down to me being fussy about what they call a "classical nootropic".