humans technically don't have races, the differences are way to small - we just call them races which is inherently racist. Calling a human 'half - whatever' IS inherently raacist then . . . 'half' in DnD ist just a fact. Nothing more.
I wouldn't have phrased this the way you did but you are correct. In this way all RPGs that have "races" are creating the fantasy that racists believe in. Humans - from the North Pole to the tip of Australia - are all one species. In RPGs different species exist. Is that problematic? It is if you confuse fantasy with reality.
If you think it's problematic to fantasize about such things and believe they should be removed from the game entirely I wonder why critics are silent on other problematic issues.
In real life I'm a pacifist - problems should be solved with words not weapons. In DnD I burn people alive with fireballs.
In real life I think chemical weapons should be banned. In DnD I think cloudkill is a great spell.
In real life I'm a vegan. In BG3 I eat pig face with a fork.
In real life I'm an atheist. In DnD I praise Mystra, the very real god of magic.
I real life I want to see weapons far away from playgrounds. In DnD my toon wanders around openly carrying weapons and even takes to teach kids how use a sword.
In real life I oppose monarchy in all its forms. In DnD I play a noble who deserves to rule over other by divine mandate.
In real life I think "evil" comes in the form of soulless bureaucratic forces. In DnD evil comes from hell and devils.
So it's weird that WotC is singling out race as problematic when - if you confuse fantasy for real life - the game is a pandora's box of problematic notions. That's part of the fun - you playing someone with archaic values.
Convert or die heathen!