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
I'm not going to argue with you on words that have already become accepted by the people whom they affect, or that most of the things you are saying are othering to the people affected and work to say that there is something wrong with them for being different / have been used to actively dehumanize marginalized groups.
I will say you are on the wrong Lemmy if this is the fight you want to make.