Human nature has nothing to do with it, and whoever gave you that theory was selling something.
“Progressives” are a form of liberal that seek to preserve the status quo by allowing minor alterations to relieve the pressure of the system’s internal contradictions. “Conservatives”, in contrast, are liberals who want to preserve the status quo by enforcing its hierarchies against whoever they perceive as being an outside influence.
Classical Liberals, the whole lot of them.
The root cause is immaterial, because those people don’t like Trump. They like an idea of who Trump is, an idea that is informed almost exclusively by PR teams and marketing campaigns.
The appropriate way to “deal with” people who are trapped in a media filter bubble is to ignore them. They are of no consequence until they try to leave their bubble and interact with those outside it, at which point they are forced to either come to terms with their deception or else double-down and retreat even deeper into it.