It was a big year for the culture war. People who had previously been cordial suddenly needed to fight each other over politics and other controversies of the day. The rest of us watched this happen, then slowly backed away.
It wasn’t even that for me. No one was posting anything political right or left back then. Just one day the newsfeed went from chronological posts of friends to littered with the bs you see today. Why even post when no one is going to see it. And then of course the natural march of life where people have less time to bother with that and no longer care if Stacy from English class liked the homecoming photos or not.