Another Reddit leaver here. I figured I'd go back after the original two-day blackout, but I've pretty much abandoned it; I haven't seen that many tone-deaf responses in a row since I tried out for "Name That Tune".
I had been vaguely aware of the SDF project before this, so I figured "okay, this is an instance that's probably likely to survive, and perhaps a little less politically loaded than some other choices."
My first Unix-flavoured setup was throwing Minix 2.0 on a 16MHz 286 clone in like 1998. Still have a bit of affinity for the vintage kit, but I traded away too many of the interesting Unix boxes I had back in the days when the local university would sell them as scrap for pennies, (HP 712/60, Sun Ultra 10), so now I have to just run FVWM with too many CDE-inspired visual features for the same effect.
I tend to find the Fediverse concept interesting because it decouples presentation from content. Right now, we're obviously still very much following the prototype Digg and Reddit gave us, but maybe there's an entirely new universe of ways to consume cat pictures we're on the cusp of discovering.