I don't have the same interpretation of his words that they do.
From what I hear, he's not saying appeal to them with more docile language. He's saying manipulate them with loaded language.
Make your rhetoric and mission so precise that any attempts to refute seem foolish. Cover all your bases so that there is no room for dog whistles, or misdirection or side stepping questions. Make a claim so direct and above the belt, that they have no corner to hide into and it's blatantly obvious.
It's as if you're suing someone who called you an n-word, sure you can call them on it and rely on witnesses to do the right thing and admit they heard it, or if you have it on camera there's no room to weasel out of it.
Though with his money and notoriety this plan seems so viable, not everyone can sit in patience and play this game.