I have mixed race kids, and have had this said a lot.
To me, a white parent. I don’t know if it has been said to DH, I must ask. Because how would it sound telling a POC that their child is better looking because they have a parent not like them?
Always said by white people, not once by a black person. Not to me, anyway.
It can’t be true and isn’t true. Those children judged ‘adorable ‘ (and otherwise) come in all shades of skin and with many different types of ethnic features.
So why do people say it?
To signal to you that they have noted your child’s mix and want you to know they are not racist?
Because a mixed child has the features they admire, big dark eyes or whatever, without too much of features they feel are associated with a non mixed POC?
I think many white people find mixed people the ‘safe’ or ‘acceptable’ , ‘approachable ‘ face of race.