Would you agree that some populations have darker skin? Sprint faster? Have different kind of hair, or skin (requiring different products)? Do you agree with the non-controversial opinion that indigenous Australians have superior vision to white people?

Everyone believes in race realism. It's only when it's about a few specific traits of a few specific groups that people deny it. And it's only about one specific organ of the human body (the most complex one), that somehow is completely identical for everyone.