> The numbers actually have agreed-upon meaning

Theoretically, yes, but some managers go blank when given a hard concept like a probability distribution.

I've found that these incompetent folks (mostly in management as you say) really don't want to reveal their intellectual inferiority; they are desperate to hide it. If you started using this with your team, everyone adding value would benefit from the clarity, and the incompetent folks will just go along with it so as not to reveal their incompetence. They aren't adding value anyways, so it's fine if they fall behind.