Opinions are dirt cheap. Everyone has numerous opinions which they readily thrust upon others' - sometimes willing but more often, unwilling - minds.
Therein lies the problem.
Opinions aren't facts. Facts aren't opinions. It is this simple. Confusion arises when the claimants assert that their opinions are facts; situation tenses when the claimants insist that their 'facts' - opinions, rather - are superior and brush aside all evidence that points to the contrary.
Do continue to insist you're right. One day, you'll find out how wrong you're. I hope I'm there when it happens.