the.com/irresponsibility
The art of treating consequences as someone else's hobby.
means A failure or refusal to take charge of your duties, choices, and the fallout they cause.
from From Latin respondere, to answer or pledge back; pile on the negating prefix and you get the person who simply declines to answer for anything.
Built-in escapeThe ir- exists purely to dodge the responsere.
Legal cousinNegligence is irresponsibility with a courtroom address.
SpreadableDiffuses neatly across crowds, where no one feels named.