Nothing matters to reality. “Mattering” is a human judgement. “Fact” is also a human judgement. The things you have in your head that you call facts and opinions are both the same kind of thing. We consider the ones that model reality effectively to be facts. They are all opinions and discerning which we classify as facts is an ongoing process.

I did not say opinions are fact. And I am not saying that opinions change reality. But your assertions about what facts and opinions are is incorrect.