I think you address what you see as their weaknesses, and move on.
We have spoken out about Levin being off target. What else can you do?
He’s wrong. There’s just other things to focus on.
Appeasement? Who is appeasing him. I’m not conceding any points? He’s wrong and I’ve said so.
You’re not appeasing him personally, of course.
But trying to have some sort of unity of purpose with people such as these is impossible.