The concept of a measure implies a way exists to bin people. So after measurement we may safely confine a person to a bin and never reconsider their lot in life again. Our culture is full of that mindset, and it’s unethical when applied to autonomous beings. People are ends in themselves - only to be defined by that person.
More simply, I personally believe I need a reason to do something mean, but I don’t need a reason to do something nice. Is binning people mean or nice? It’s definitely mean. I suggest corrections but also the possibility of redemption for offenders.