the.com/unconcerned
The art of watching the building burn while finishing your coffee.
means Free from worry, interest, or anxiety about something that arguably deserves at least one of those.
from Latin concernere, to sift together or relate to, prefixed with un- to politely opt out of caring entirely.
Cousin wordConcern once meant to mix or sift thoroughly.
Tone shiftCan read as cool, callous, or blissfully clueless.
Grammar noteUsually takes about or with, never of.