He is not a founder. He is an egomaniac with delusions of grandeur. He thinks he "shouldn't have to argue" because he is a founder? Utter bullshit. He has to be willing and able to communicate with his cofounder and that involves hashing things out.

I hate arguing online because it is almost always a form of fighting with people over emotional bullshit. But I have zero problem with the other definition of arguing: debating ideas to get at the truth.

You can't build a solid company if you cannot do that.

Don't start a company with someone whose precious feelings come ahead of clear communication. That's insanity.