I think this is the crux of the issue.
It's clear that a lot of people view the dnd races as just slightly different humans, in the same way there are different ethnicities irl. Suggesting that one human race is dumber or stronger than another human race is awful, and people rightfully get censored for it.
While a lot of us view the dnd species as completely separate and in many cases unrelated creatures, often barely comparable to humans at all. Saying a centaur is innately stronger than a human makes as much sense as a horse being stronger than a human. They're not just 'humans, but not', they're a completely alien species which also has sapience, but completely different abilities and may view and interact with the world in a different way.
And I honestly don't see any way for these two groups to reconcile their views.