Other than marginal utility, I see absolutely no real value in his work. However I see many evils, including the subjective theory of value and his epistemology is straight Kant. So he undermines science and reason.

I do not know about this. Menger was not the "savior" of Austrian economics. He was the founder. As such, he was a man of his time. His analyses were correct in many respects, and flawed in others. His students built upon his work. To blame Menger is to blame Adam Smith: the errors in context do not disprove the work en toto. The same is true of Ludwig von Mises. ... and if you want to argue Einstein and physics we could go back and forth all day.

Pseudo-Objectivism allows the moral condemnation of anyone who ever made a mistake.

Myself, I find interesting insights in the works of Karl Marx, and Nikolai Lenin. Truth is where you find it.

For whatever errors he committed -- and he did -- Menger stood against the rising tide of Marxist socialism which claim a "scientific" basis that he refuted.

When ever I pin down an Austrian on Mises or Hayek they always switch to Menger as the savior.

Gov't this, gov't that--looks a lot like socialist to me.