My criticism is of the writing in the OP, and of Kaczynski's writing, which while contextually relevant, isn't actually about Thompson or even specifically health insurance.

To answer your question though, I don't think he gets a pass, ethically. But I also don't think justice trumps striving for better outcomes in society, and in fact it's the other way around. This isn't exactly being contested; the rhetorical focus is on means and results.