even if one accepted the implied unlikely propsition that no such persons exist or ever have existed, the terminological question would remain
I don’t think so: psychiatry has no need for terms that fail to refer. (On the other hand, psychiatry might have a term for something that doesn’t exist—because it once was thought to have existed.)
Allow me, please, to question whether a book precis should be on “Main.” An ordinary precis doesn’t represent a “top level” contribution. Putting this on Main makes it look like a “top ten” poster can get upvoted by posting almost anything, anywhere.