When telling someone that he's wrong, try to use some arguments or you just look ignorant. However, right and wrong are due to perspective when the matter is style and hence no matter what arguments you use, in the end, it's due to the subject. So, when you're going to make a statement about style, try to make it clear which background supports your statement and be aware that your truth is subjective.
It was just a joke. I am fully aware of the difference between opinion and fact. Now, if we want to talk about what a fact really is we can get into the metaphysics of what our senses are really capable of telling us about the world and how it is possible to determine what we can know. That's a joke too.