Meltdowns seem to be a going thing at every layer of human interaction. Something in consensus reality slips, a schism arises and then you have to hard tap at the glass to decide to see if it’s a mirror.
In preparedness communities they talk about “normalcy bias” as the preference of individuals to avoid looking at a problem straight on. Adjusting to bad news is like grief. It has some steps.
I think that it’s relatively clear to anyone watching that the world is in a particularly malleable place. Old assumptions about institutions and power are tested.
I think it’s never been easier to have your grip on reality rocked. We are all getting rocked daily by meta-narratives and players of games because the internet is a sea of competing games and stories.
Maybe that level of instability is too much to manage for any of us so we install pressure sensors and we let off steam and we carry on with whatever seems manageable. So someone has a meltdown. Seems to be going round.