It pops up from time to time and we usually figure out a solution to it short of drowning all our judges in the Grand Canal (as they did wayward Doges in Medieval Venice).
Some societies never resolve the issue and the next thing you know the courts will have exterminated all the mentally retarded and handicapped people, and so numbed the people to the arrival of an Adolph Hitler.
Here we aren't going to let this Greer character get away with it.
Your posts are always right on the mark. Very clear thinking and analysis.