I wish we'd frame it as 'it sucks to live among people who are living in poverty'. It doesn't matter to me whether they are 10% more or less productive - that's not a compelling argument for me or anyone besides middle management really.
To me, the very mindset of boiling humans down to 'productivity' aka profit is a toxic way to look at life. We're well past needing to force people to work the fields for food, so why are we still treating human productivity as a valuable metric?
It probably comes from 'the free market is the best we've got, free market success is decided by profit'. Well yes, but remember why we're using the free market in the first place - winning at any cost was never the goal. The goal was to improve the quality of life within a society by letting supply and demand guide people's choices. It's turned into a strange ideology of celebrating winning and viewing anyone who isn't winning as a loser, rather than your teammate, your neighbour, dare I say your friend.