Yeah this action on the part of ESPN sounds a bit silly. I doubt however they are going to ruin his career. It seems like an unnecessary reaction, but it won't impact him. They will put him on another game.
The argument here really is nonexistant. Nobody is "erasing history". Robert Lee will remain in history books, be studied by military strategists, and this very statue will be placed in a museum. He is simply being removed from a place of honor, since he fought against the united states, to enslave people who now reside freely in this country as citizens.
Is it a slippery slope? I don't know. I think a tiny bit of common sense exists believe it or not. A few people pulling down statues is really a minority of people who are even opposed to their being there. Some people need a light push to vandalize. I am not defending that. But the town leaders voted, and Lee goes into a museum. I don't see the issue honestly. If we were destroying it, burning the history books, or anything of the like, I would certainly be against it.