Optimism is a helluva drug. People believe things that aren’t true, are only loosely true, true but improbable, or true but lacking important context. To do otherwise hurts too much. They tell themselves stories, find statistics, and surround themselves with incentives to make their beliefs seem as real as possible. They’ve done it forever. They’ll do it forever.
People tend to be optimistic about themselves but pessimistic about others. Social media probably supercharges that. Benedict Evans says, “The more the Internet exposes people to new points of view, the angrier people get that different views exist.”