Congratulations you removed all the context and qualifiers ("if you approach it from a very generous mindset,... You can soften the racism of deriving personality traits directly from a character’s race") in his statement and made an absurd analogy.
It's not reality. It's a fantasy world. Additionally, it's a literary fantasy world. Real-world concepts of race don't apply.
If you think it's a terrible concept, by all means play a different game, build your own world, whatever. But just because the author doesn't like D&D doesn't mean it's wrong.