Are you not familiar with the concept of just having a polite discussion for the sake of it? You created a thread called
"Implications of social-construct terms of Humanity and Beast" and yet when I try to talk about the implications of term, to move beyond what is explicitly stated and theorize on the how and why of the terms spread, you accuse me of spreading misinformation and gaslighting.
If there are no differences between man and beastman, then what exactly do you think caused it to spread the way it did and be applied to the races it was? The term was created by one city state, and yet is now used by virtually all Eorzeans and applied pretty universally to all native non-human sentients.
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Also, regarding the human races, yes they are
somewhat similar to the real world human race. The player races of Eorzea are confirmed as being able to crossbreed.
https://forum.square-enix.com/ffxiv/threads/32685-Questions-related-to-Lore?p=490835&viewfull=1#post490835