Pointless people

What if we could tangibly measure happiness, and also tangibly measure productivity. Some defacto scale that actually meant something. You are happy, you are productive.
Then what if we discovered that all the morons who spend their days strolling around doing nothing. All the people attached to iPhones wandering around shops spending money of BS… what is we measured their productivity (low) and happiness, and discovered they where very unhappy, as well as pointless. (there’s some value judgements going on here).
If those people are happy I can sort of cope with them, but if they’re unhappy and unproductive, then what would be the point of them. Would it be kindest to just… I don’t know… round them up and dump them in the wilderness with bears?