I maybe wrong in thinking about this way, but in the 1970s people were debating over topics that were debatable. Vietnam for example, an argument can be made it was the right move to get involved. And, an argument can be made it was a mistake. Same with socialism vs. capitalism and a myriad of other large, complex topics.

Now the divide is around the basics of the scientific method. People think that vaccines have killed more people than they help. They think that hydrochloroquine is a wunderdrug and Bill Gates is suppressing its use so he can make more money. I see disagreements that are not arguable on any merit.

I pointed out to someone on social media the other day that the post they were sharing was objectively fake news (with links to proof). They responded that they didn't care because they believed it anyway. Is that a divide that can even be crossed?