I am certainly not offended in the least. And I deliberately used your own words 😏 it seems you don't quite live up to "it's an open discussion" when you say to a member "you are not welcome"
ha ha - ohh but I have something to do with it. All can butt in anytime they want. You want to see what a clueless person looks like? Go find a mirror - but I suppose you don't have one since you probably couldn't stand what you saw every time you were near it
you are quite arrogant and wrong. If someone posts something that is incorrect - like you - they are of course corrected. You don't decide who "keeps quiet" - do you understand?