[preommr]

> that someone is dividing and conquering the public.

Yea that someone is society.

Tribalism happens because the feverent supporters are the ones that actually give money, time, etc. Someone that sees the nuance, is more likely to be okay with either solution, or said another way, not likely to give money to one side because they don't want to fully endorse one side.

The people supported then go on to be politicans and media personalities that then force people to pick sides because it's more advantegous to them.

It's an oversimplification, and not always applicable but a decent enough explanation for lots of our problems.

[Spivak]

I think there's a "the world is entirely grey" presumption here that prevents the full analysis. You're not treating "it depends" as the fully-fledged position that it is. If you did you would see that there are now three positions the originals X, Y, and a new one Z that are incompatible. They can't all be right. X and Y have lots of supporters, why do you presume your new position Z to be correct simply because it lies on one of many possible lines to draw between X and Y?

Surely for any real world issue the positions X and Y were the result of someone else's seeing the nuance but landed in a different place than you did.