Theory on CERN shutdown
When the Large Hadron Collider was turned on in 2007 I remember a roommate being disturbed by it because there was pushback on the unknown dangers of the accelerator. I can't recall the details but I remember him saying that scientists were theorizing it had some chance to destroy existence or have some catastrophic unknown effect. He said something specific it's just been a long time..
I recall some concern about this potentially dangerous thing we had no say over which was about to be turned on, but then months and years went by with no incident. I just assumed "oh, its not a big deal actually."
But if quantum immortality is a thing, perhaps thats why the timeline has gotten weird? Maybe CERN has wiped out human existence in many timelines, or had some catastrophic effect. Perhaps those of us here were in one such timeline and had to scramble off, were thrown into a weird ass timeline. Or maybe it works in some other way.
Everything started getting weirder around that time though. Can't remember people having hope like they used to past 2013 or so.