You’re not being trolled this is literally how the English language works: https://www.google.com/search?q=eject+etymology+&oe=utf-8
So would you propose we just say autistic people and normal people? Doesn’t that seem kind of cruel and bothering?
Should we also say asexual people and normal people, or aromantic people and normal people, trans people and normal people?
Where do you draw the line?
Aautistic doesn’t follow English’s rules for making words, we don’t do double vowl startings unless they are from very specific loan words that were popular enough to break the rules.
Same was alloistic doesn’t work without a hyphen because when you have an o from a prefix and I from a suffix you need to drop one of them to make the word work.
Basically English has illegal parrings of letters you can’t make and when they would come up you need to hyphen them together or drop letters.
See eject, which is ex-ject but we can’t have xj so we drop the x.
Or attend, which is ad-tend but we can’t do dt so make it tt instead.
Wading should be wade-ing but ei, so we drop the e.
Etc
The prefix Allo just means other, so when you have a pair of things the other one will normally become Allo-thing. Because we don’t make words the culturally accepted default position until there is something to contrast it with, most instances of Allo will describe the culturally accepted default.
Aromantic - Alloromantic
Asexual - Allosexual
Autistic - Allistic
Then it’s unlikely you’ll ever randomly happenstance into a relationship with someone.
You can either accept this, or try to change this. People aren’t as set in stone as you think they are unless they want to be.