They feel very strongly about a topic, but it’s entirely based on their various personal experiences. They arrive at the conclusion first, and then try to arrange reality around their opinions.
Someone else did provide evidence, though: https://news.ycombinator.com/item?id=48153756
Some 16 minutes after he asked the question, so that's not an excuse for criticism of the question.
As to his being answered: somebody responding to him in good faith does not suddenly validate what he was doing.