Earlier quoted context omitted.
> Restrictive policy responses hurt one group of people in an attempt to protect others. That's the definition of Pareto optimality
Ok, pareto optimal describes a state, and I was abusing the term to apply it to a change of states. Definitely could be ambiguous: Are you moving towards pareto optimality, or starting at PO? When I've heard others commit similar abuses, they use "pareto optimal [change]" or "pareto efficient [change]" as synonyms for "pareto improvement." ie, moving towards pareto optimality. ie, a change that makes someone better a…
I say "incorrectly" because "some regulation R makes some group worse off" (as you were saying) does not imply "all reg changes would make someone worse off" (Pareto optimality).