Now we have to make Santa black or multicultural because some Hollywood mom adopted black kids? Santa, as a character, is white. Or you can make him black. But it's hard to keep the Santa is real thing going if you have differing reports on what Santa looks like.
We could give Santa a friend who is black. (Hopefully a better one than Black Pete.) But then he or she would be copyrighted and disrupt the magic. Rudolph is technically under copyright, but they're not Scrooge enough to sue companies which sell unlicensed red-nosed reindeer ornaments at the Dollar Store.
The best way to celebrate diversity with Santa is by showing children or helpers of different ethnic groups. Or go the multiple Santas route. Or, if you want to block your kids from watching holiday specials altogether, you can go the Santa's Husband route (no, seriously, that is a thing) and just say that the jolly white guy is the husband of black St. Nick.
Not everything has to be an act of oppression just because a white guy is featured. On the other hand, I don't begrudge Black Santa either. He's appeared in some good shows and, if you look at historic depictions of the actual Saint Nicholas, he's of a darker complexion than most would expect. So, there's that.
Do what you want to do, they're your kids. But damn is this a bit silly.
Shut the fuck up with this clownery. We've had media and merchandise depicting Santa as black for decades