“The road you propose leads to theocracy. I’ll pass on being temporally ruled by any religious figure.”
That’s really stretching it. Common courtesy and civility has nothing to do with establishing a theocracy.
You speak from Robespierre and Danton, not from The Constitution of the United States of America.
And you and other people here seem to realize that you cannot legislate morality, or common courtesy or civility.
Of course if dueling were legal this problem would get solved asap.