I’d say one problem is also that the characters being “race swapped” are typically the less-important sidekicks or something. “Sure, we can put more color in there - but they can’t be too important as characters” seems somehow almost more racist than just following the original stories. Why not swap the main characters if they’re going to change things? I don’t usually mind, if they put in any effort sometimes the changes improve the story and even the characters themselves.

(And that was a rhetorical question, I know they won’t because… racism usually)