A question about estoppel

Yes. That’s where the humour comes from. It’s a parody.

Aggression is the initiation of force. Besides, how can a person coherently argue against retaliation without falling into contradiction?

I am deviating from the traditional Rothbardian position. I gave my justification in the OP. Can you prove me wrong?

Well, I sort of agree with your position. At least I agree with the idea that if A doesn’t think the property of B,C,etc is to be respected, A can’t object to his property being treated equally.

But I imagine that in practice people would make explicit arrangements as to how they want their property and persons protected…and ‘pacifist batman’ would not necessarily be a welcomed guest.

Why should the opinion of a bystander be relevant to a dispute, assuming the quarreling parties did not ask his opinion ?

Also, I’m not sure what you mean by punishment.