It has been an interesting few days. Intel has already gone on record with a notably weak PR statement, cloud providers are effectively force-rebooting their entire fleets, and it seems that variants of these also affect AMD and ARM CPUs, so there goes Moore’s Law (again).
Fortunately, it seems that macOS and iOS already include (at least partial) mitigation of these, although truth be told that my expectations towards a complete fix are nil–my bias against Apple’s QA record notwithstanding, the underlying issues are simply not easily fixable.