From what I've seen, the style of treatment of us has at least some of its roots in some kind of neurotypical Need to label and quantify things in order to have their world make sense - I have seen some of them who develop actual physical stress and anxiety when they encounter a thing which can be only poorly defined, boxed.
And since neurotypicals, allistics, whichever word suits, are the majority of people, the things which are right and normal to them are things which are similar to them and understandable by them.
Things which are unlike them and less than fully understandable to them must therefore be defective because if those things were not defective then they would by definition be just like them.
Yeah, it sure looks like some kind of circular reasoning or something, "We are standard of normal because we are the standard of normal".
As for me, I prefer to be thought of as being me.
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"There are a thousand things that can happen when you go light a rocket engine, and only one of them is good."
Tom Mueller of SpaceX, in Air and Space, Jan. 2011