That’s an objective fact.
I’m one of the few people brazen and crazy enough to just admit that I think everyone that disagrees with me is wrong. Most people think like that too, they just pretend not to.
Few people are self-aware enough to realize they think that way. And once you realize how uniquely right you are about everything, it’s not polite to say so. Even fewer people progress to the next step of questioning that belief so that they can strengthen the conviction they are right, ad infinitum.