I do agree to a point. I agree with you about the cancerous identity politics. It is daunting to deal with. Meaningless labels that solve nothing in regards to real issues, just minor wars to keep people occupied.
Myths, legends, stories... they all use to hold purpose when passing on wisdom to future generations. "Moral of the story", a phrase long forgotten on many.
Majority of politics overlap in general regardless of nation. Many of us want the same things and a few want to prevent that (extremists).
I wouldn't say tribalism is inherently bad. Human behavior has always had a tribal component and to a degree could be used for progress/ survive-ability of the species. It is when we have certain evil types become leaders and propagandize society against other ethnic societies that things fall apart. A tale as old as time really.
Case in point, Britain with their Orwellian society, China with their extreme control over every person, Middle-eastern countries and their lack of abiding by basic human rights agreements, Socialists central and south America and their inability to understand why socialist policy fails on a country level and then migrate to continue their bad ideas in a different place, and so on.
All history is revisionist history, because history as we know it was written by the victors and the footnotes being the losers. The internet has simply made it easier for the losing side to have a more visible record for everyone to see. And no one can be blamed for falling into its trap, because we were all raised to believe it as truth. Critical thought is dangerous to those who want control. It is why it is considered a gift nowadays.
Yes, the common agree to disagree is always better than being right all the time. Same as admitting we will never know everything much less the truth to everything as well.