It's not derogatory, just fact. The "aspie-ness" ramps down trivialities of the world and lets people hyper-focus on individual issues. When that hyper-focus is pointed towards "personal gain at all costs," the world suffers.

HFA people are, by definition, HF enough to operate coherently in the world. Sure, they may be considered "weird" or have no friends or wake up one morning and realize life has passed them by while they were hyper-focused on one thing for ten years, but they are still in and of the world.

The issue isn't fact vs fiction, but that you're being extremely insensitive and using what's considered a derogatory term.

Everything is derogatory if you are predisposed to being offended.

It is not a predisposition. You are using a term that was actually deprecated this year as synonym of "hyper focussed" individuals which is actually just an stereotype, most people on the spectrum aren't hyper-focussed.

As an example, homosexuality once was considered a mental disorder and it is full of stereotypes. And I am sure that homosexual people would be very offended if someone starts using the term as a synonym of hiper-sexuality.

Also I am very sure that someone would say that is a fact based on anecdotical experience, and hence is not derogatory.

For me a misuse of a term using it as a cliché is indeed derogatory.