Nah, it's a by-product of giving people what they want to make money. This sort of issue has been building for a long time. It's based on abundance of resources and availability of choices. As we have more time and money to spend on things, we can make more independent choices and take positions on issues that we didnt even think about before. Essentially, the semi-homogeneous population slowly fragments into smaller and smaller factions that are not geographically constrained (thanks to tech).

We've known it is intentional since Cambridge Analytica at the latest.

That wasn't about creating a split but rather taking advantage of an existing split, right?

Potato potato