I think we're merely highlighting the distinction between what level of responsivity a job actually requires. Those who deal with things that require near-immediate attention (janitors, sys admins, doctors) would stop the world. Everyone else the world can (by definition of responsibility) continue without any issue for awhile, and maybe at worst stagnate.

I think this might be a completely orthogonal concept to measuring how "bull shit" a job is, despite how often it gets brought up in this context.