Why Batman Can't Be Black

According to a couple of black guys: http://www.outrightgeekery.com/2019/02/09/batman-cant-black-video-commentary/

To be honest, I used to think like them, but now I wonder if Bruce could be mixed-race (maybe one of his rich relatives married a POC) or maybe he was adopted, and once the Waynes were milled Alfred took responsible for him instead of allowing him to go back to a children's home, or the hood, as the guys in the video joke.