I mean being romantic or sexual carries some other connotations and meanings making them ambiguous in many situations if used as the antonym to the asexual and aromantic label.
I don’t really care what words are used for it but I find the allo ones useful as they are the most commonly understood ones and are unambiguous.

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.