I would be surprised that a psychiatrist would find it a useful term - in the same way that any doctor would not look at the paralympics and see only one illness / disability but dozens of conditions.
I am fairly certain there are Rain Man like people who can do algebra or calculus but would for most people sit under the term "disabled".
Perhaps it might be good for you to ask, "the people I see who can do algebra also can act in certain other ways, socially and mathematically. How much am I looking for people who can do maths, people who can do maths like I do, and people like me who can do maths"
Edit: yes I suspect I sit to the left of you, but the important takeaway here is not that some people are more "intelligent" than others (I agree for whatever definition we choose) but that raising the education level of all in society massively benefits us all. Oh and ranking peoples value in society based on intelligence is not a good idea. It's only just above ranking on physical disability, or your parents aristocratic connections.
I gave no indications that people ought to be ranked in terms of value to society based on intelligence or any other criteria.