Spreading incorrect information is bad anyway.
However, it is better, of course, if it is marked as unreliable.
What I meant mostly is that students can remember wrong information, then try to use it and fail consequently. This is what “problem” consists of.
I think too that education have problems.
School should teach not only how to remember information, but also how to find and verify it. Basically, it should teach how to learn.
Second problem is somewhat related to the first one: information in school is highly biased, to the point of being just incorrect. Often it happens with topics, related to politics or culture. And I think it may be the reason why students are not teached how to verify information - because they will realise that teacher tries to fool them.
Third problem - students should know that making mistakes is what distinguishes people from computers. People usually work with incomplete information and produce fuzzy results. Computers can’t work without precise instructions, but with precise instruction their results become precise.
So it is wrong to blame person when he make mistake. What’s the problem is: 1. Where there are too many mistakes. 2. When feedback loop is broken and person can’t or don’t want to correct his approaches.
I doubt that things will go better if I add emotions 
So I try to focus on essence of the problem.
It produces less desire to go offtopic by other people.
This is how problem solving works.
- Problem is identified by one person.
- Other people gets convinced that problem exists.
- Someone start to develop and implement solution.
If process stucks at stage #2, it means that either
- Problem is not a problem at all (reporter is wrong).
- Main developers are wrong, but can’t understand it.
Without having consensus on whether one person is wrong or another, it is not possible to move further.
It is just a tool. Very useful tool. I can’t understand why it may be “not needed”.
Several conversations can happen simultaneously.
If someone is not interested in some part of this topic, he can just ignore it and focus on what he likes more.