People are entitled to their opinions and this thread would be boring if we all shared the same view. I enjoy and learn from the diversity of opinions.
However while some people see a statement like “you are wrong “ as an opinion I don’t see it that way. To me the person is stating it as if it a fact. It is also coming from a one up-position i.e. I’m okay you are not okay. And what is not said but is implied is that because you are wrong I am right and that only one person can be right. If the comment was directed at me I would see it as an attack which I would take personally. It would be hard to respond to that comment without the conversation escalating.
And we should remember that there is only one person who is right and that is Mr Market who is a drunken psycho according to Warren Buffett, and therefore very hard to predict.
If you use an I-statement and say “I think you are wrong” it would obviously be your opinion and my response would be curiosity as to why you thought that and it would open the way to a discussion where we both could learn something. So if you are going to disagree please try to start with an I-statement such as I believe, I think or I disagree, and make it clear that it is your opinion or your perception.