For me is just the simple logic that people always need to have a word on something even if they don't know a dime about the thing they have opinions on. I am noticing this behavior more and more in real life and online (even worse than in real life). And it bothers me very much, to the point I am getting mad and avoiding those people. I am trying to be gentle, but this is not human nature. It is just egoism, disrespect, waste of time and so on. A kind of applied Dunning-Kruger effect...