GMI is a dividing line on the libertarian right. Most still hate it, because they're basically anarchists who hate any form of government spending. But there's a minority who really like it for its simplicity and fairness, and the positive impact on personal liberty.
They sound like the Mutualists, of whom I know one (he's in the same political party as me, hilariously.)
As far as I can tell, Mutualists = Market anarchists who believe local judges (who aren't officially given any power) and embarrassment will keep everyone behaving ethically - no need for formal laws or governments. It seems a very very deep misunderstanding of the role of weak-tie trust in economics to me.
