Honestly, I think Walker is being treated with kid gloves a bit because it's just so fucking sad. If there was a way to go scorched earth on the people that put him up to this in a manner that would be effective, that's the route. But I don't think it exists. I also don't think that he's all there enough to realize how fucking embarrassing it is to hear what comes out of his mouth.
At some point Warnock is going to have to take the gloves off. Something like, "Look, I am not qualified to play or coach football. That can be a tough game. If you asked me X or Y or Z, I'd have no idea, but I'd have the courtesy to say "I don't know." But I am qualified to be a Senator. My opponent is not. And worse, he refuses to say "I don't know" and instead speaks and removes all doubt that he is incapable of governing. Don't do this to America or Georgia. Don't do this to my opponent, who is ultimately a prop. Vote Warnock."