That doesn't require a few years, there are loads of people out there already who have forgotten how to have a conversation
Especially moderators, who typically are the polar opposite nog the word. You disagree with my factually incorrect statement? Ban. Problem solved. You disagree with my opinion? Ban.
Similarly I've seen loads of users on Lemmy (and before or reddit) that just ban anyone who asks questions or who disagrees.
It's so nice and easy, living in a echo chamber, but it does break your brain