Except that the "values" each promotes are often inconsistent with other "values" they promote, sometimes to the point of absurd irrationality, e.g. marijuana vs tobacco or alcohol.
And other "values" are completely independent, but correlate so highly that "tribalism" is a much better explainer, e.g. abortion and guns.
> and into a world where the parties policies are aiming to realize fundamentally different visions of the world, based on fundamentally different values.
That's not new.
On a very high level, the two major parties do want everyone to be healthy, wealthy and wise -- the issue is that they disagree on what those words mean, and what should be sacrificed (and by whom) to achieve it, which means the two major parties have always had very different visions of the future.
> If you discover that someone has completely different values from you, then discussing policy isn't going to be useful anyway, because there's no way you'll agree on a single policy when you have different fundamental values.
And that right there is a call to tribalism: Don't bother with Those People, They Have Different Values, They Aren't Like Us.