Maybe you just read the title and then responded like usual?
I wasn't arguing that all libertarians have this morality. It is a small subset of irrational, self deceptive moral bores who think their holy NAP is a moral absolute, and for this group, the suffering of the stupid would be a moral ought whenever it is the consequence of a NAP conforming system. As a moral system, it's silly. But there are plenty of good reasons to be a libertarian that aren't moralistic.
So there is no straw man.
Anyway, your economic simplicity is funny, you really actually believe that a "true free market" - whatever that is, no example in history of private law complex markets - will produce a stable system without concentrations of wealth, easily converted into political power.
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