Is it "racist" to say mixed kids are the best looking?

My niece’s uncle just had a baby with his wife. He’s Laotian and she’s white. On his Facebook status he said that it’s the truth that MIXED kids are the best looking and the cutest. Of course this is biased but don’t you think that is kind of insulting to people with non-mixed babies?

I know it’d be more of an issue if people said “White babies are the cutest!” or “Black babies are the best!” But everyone liked his status about mixed kids. It seems like you can get away with saying that.