Nah, it’s because he was referring to the Negro Leagues (a legitimate historical term). It’s actually pretty explicable, and in any case, no matter what he says, the press is there immediately to cover it up or “massage” it.
Yeah, he meant to say “the great Negro Leagues pitcher,” but his dementia got in the way. But why does Biden keep talking about Satchell Paige seemingly every time that he goes out in public? He mentioned him to Pope Francis, for crying out loud (right before he pooped his pants).