The celebration of stupidity is a seminal tenet of liberalism.
That and a dumbed down version of Marxism.
One valuable lesson, second only to "GTFO of California" was that if everyone is doing it, it is no longer rebellion; it is conformity. That lesson is lost on leftists; they are truly herd animals.
They remind me of a flock of starlings that makes a sudden turn; they all follow the one in front of them, mindlessly, so as to remain in the group. To remain in the group is of penultimate importance.