[AnthonyMouse]

It's the censorship making the division worse.

Social media already has a big problem with filter bubbles. If you go to a place where 99% of people there are one party's partisans and try to rebut their misinformation, you get dogpiled. People insult you and sling baseless accusations of racism, which deters people from attempting to debate when they're highly outnumbered. So any place which has any partisan bias gets an even bigger one until everything is totally polarized.

Platform censorship makes it even worse because the platform's censors will be in one bubble or the other, their censorship decisions will be biased in that direction and push anyone on the other team onto other platforms and we end up with entirely partisan platforms that never talk to each other, and are thereby both highly misinformed about different sets of things.