This is such a big thing Ive seen over the years.
People simply dont know how to think logically. And many people cant take criticism or feedback. So they cant think, and they dont improve because they cant handle feedback. They take feedback as a personal attack and just ignore it.
- learn how to think from tv / movies
- no interest in serious self education
- many people think they know it all
- barely research subjects they claim to know a lot about
Society is really becoming heavily handicapped by these things.
If you wanted to know a lot about subject XYZ you'd need to read 2 or 3 books and watch several documentaries - at a minimum. That would be a good START. Most people do 10% of this, and think they know it all.
Also what is sad is that I’ve tried to converse with the people that are like what you described their refutations are . Oh we’re did you get that from , thats not what this doctor ,teacher, person in authority said, I don’t want to hear because this person or situation was bad so nothing else matters. What’s funny is even if I get them to except my point and they see their error they forget it within the same conversation.