> I'm sure most people have noticed how large family gatherings have shifted over the last 15 years, and how some family may no longer even be invited as a result of social media driven shifts.

So because of social media bubbles, people split their families into bubbles too? If even in a real life setting, where no algorithm curates who they interact with, people choose to segregate despite of family bonds, then that sounds more like a people problem than a social media problem to me.

There's definitely families out there who can get together despite holding diametrically opposed political opinions, even discussing them at the dinner table without getting overly emotional about it and needing to un-invite people from later gatherings. I'd call that a normal, functioning family.