Yes and outside of cushy CEO jobs with golden parachutes at major corps or coaching gigs it is not customary to get paid for future work you did not complete. But that is what happened, somewhere along the line coaches got a lot of power, maybe even decades ago, not really sure how this trend started though. Likely with some big name school with a surplus of funds and a desire to win quickly with very pro-coach contracts, who knows.
Just the same, to get money even after doing a lousy job is quite, dear I say, crazy! In any other field, that level of ineptitude is a fire-able offense without getting anything, but again, schools lost a lot of power. I would imagine that is what people are pissed about. But yah, I guess if it is in his contract, he should fight for it, just don't be shocked if more people start to despise him.
So yes, I am sure most of us do indeed have real life jobs. Real life jobs with little or even no protection.