The question here is absurdly simple. Do you want to conquer Iran or not?
If you don't, you must acknowledge that you will eventually have to talk to them.
If you do, then you can legitimately claim that talking with them is unnecessary "appeasement", stirring up the ghosts of WWII, because you desire the same conclusion.
Everybody knows this, even if they don't say it.
So the question then becomes: what are the "no talking" people really saying?
Well, it's pretty clear, isn't it?