Do you look at that as the primary early driving factor of the tribalism we see today?
To an extent I suppose, but they have been out of power a long time and it has gotten a lot worse, so there is something more systemic going on. People are fundamentally wrapping themselves in bubble wrap and building their own safe space echochambers. I suppose there may be many factors--technology inundating us with too much too fast, the break down of traditional families and social networks, too many prescriptions to keep us from feeling any emotions because we don't know how to deal with them, IDK. It isn't just politics. Golf courses and churches alike are losing membership; civic and community organizations struggle to find members and volunteers. Mom hides in her she shed, dad in his man cave, and little Skippy sits in his room on twitch all day.