There's something to this. We've never been bombarded with so much social stimuli hitting us 24/7. Every URL offers belonging in some form -- you're either a valued customer, a fellow fan, a potential date, a loyal follower, or a soldier battling an enemy. We're hooked in so many ways by so many people on so many platforms... imagine what that flood of content is doing to our cognition. We can't process all of it, but being social creatures, we usually choose content that reinforces social belonging over cold facts. We'd rather share a delusion with a group than be alone with the truth.