Is this thread just one big semantic misunderstanding, then? I think of ethnicity and race as casual synonyms, and when they are distinguished, I think of ethnicity as cultural ("Hispanic") and race as biological (genetically Spanish), both of which are very fuzzy. But it sounds like you're using the term "ethnicity" biologically, the way I would use the term "race", which I'm not used to.
It’s not semantic misunderstanding. It’s one group trying to signal moral upper hand by either playing semantic games or by being ignorant. It’s mostly stemming from signalling moral upper hand. The group seems to think you can beat racism by claiming race itself is not real.
