The Implications of Having Bad Guy Races in Dungeons and Dragons

As a kid playing D&D, I don't think I realized how much human there was very code for white. Humans are the most adaptable and ambitious people among the common races. In Dungeons and Dragons, part of what made humans so normal is that they used to be like the statistical baseline. If your character wasn't human, the numbers given to their traits and stats were defined against the values of the human. And against the zero point of humans,. So I get the weirdness here, but that also kind of makes sense, right?