I think there's a lot to analyze here.
1. The segregation of our country. We've been polarizing our society since the mid 1960s. Even within states you see deep polarization.
2. At the same time we're seeing segregation in our country, we're seeing communities formed online that are nothing more than echo chambers for their preferred media and tribe. These echo chambers make one impervious to facts and radicalizes them. Qanon is a perfect example of this. People are creating their own communities online with its total effect on our democracy completely unknown.
3. The way we communicate, inform, and educate. The advent of the radio changed the way we communicated, were informed, and educated. The TV has had an even greater effect. No longer do we value information, only style. Remember how the NY Times reported that impeachment lacked the "Pizzazz" to hold our attention? TV media doesn't inform voters, but turns politics into a sport that is either won or lost. TV and social media is inhibiting the ways we communicate and retarding the way we think, articulate arguments, and otherwise make public discourse.
To borrow from the book, "Amusing ourselves to death" Orwell wrote about a society where information was carefully censored. The truth was kept from the masses. Huxley wrote about a society where information was flooded (most of it garbage) and the truth was indecipherable from fiction.
I think this is a real issue. After 4 years of this hell, million still think, "Hells yeah, I want 4 more years of this! Cry more lib!"
Perhaps we've reached the extent of liberal democracy? Perhaps we're actually on the long downslope towards oligarchy and authoritarianism? Have we ever thought about that? That our liberal democracy all the progress we've made, maybe gay marriage or the Civil Rights Act ( and the Great Society) was the pinnacle of what's possible for democracy in this county? Do societies ever known when their democracy has peaked and now backslide? Did Germany know back in 1932? Did Russia know back in the early 1990s? Will we? Western democracies all around appear to be backsliding, progress has halted. From the UK, to France, to the United States. Progress has halted in many of these democracies. Is this a speedbump or the start of something very sad?