Your analogy isn't really accurate though, as completing 8 hours work of time in 2 hours would leave you unrewarded unless your boss gave you a bonus/promotion/whatever for it, whereas in M+ the reward is instant. Doing one vs doing two M+ in the same timespan wouldn't give the same reward without the speedrun bonus, but would leave the ones doing the two M+ doubly rewarded. In the current (which is going away in 7.2.5) system, the ones doing two in the same timespan are triply or even more rewarded. That's what my issue is.
And Blizzard just announced a change a while ago confirming that that's what's going to happen.
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Must really suck when you're so salty that when your first wannabe elitist post doesn't get the responses you were hoping for, you push out another saying the same thing.