Rothbard, as all other apologists of Austrian school, is fast in condemning neo keynesians for their defense of govs interferences into free market economies. Naturally, even less sympathies does the labor theory of value get from him (Rothbard blames it on non other than Saint Thomas Aquinas with his Summa Theologica).
At the same time, being himself a part of the Institutional Construct (which is, of course, The Ludwig von Mises Institute for Austrian Economics, founded by Rothbard and his followers in 1982) he stands firm, defending its strategic objectives to over-survive competing Constructs.
He, simply, can't accept the notion that all economic theories (including his own - libertarian), which were built on the base of Greco-Roman (and later Christian) traditions, are incapable to abstract themselves from the on-going fight between two-sided group of Institutions, one of which is historically adherent to Platonic (ideals based, tyrannic) and another to Aristotelian (laws based, democratic) Artificial Constructs.
Consequently, both of those institutional armies staunchly reject each others main philosophical theses, one of which states that humans can and must govern their own destinies according to their undefined, idyllic, divine inner-selfs, and another - that only the material, atomic, quantifiable world exists and humans must act accordingly, subjugating themselves to the overwhelming force of entropy.
In contrast, Evernomics accepts humans intellectually evolving into the surrounding Universe through their limited perception apparatus, evolutionary wired to strive for the Eternity. Building Institutional Constructs and, then, fighting for their timeless supremacy is the most primitive way of how we exhibit ourself in recorded history, including that of the, so-called, 'economic theories'.
Accordingly, by the sheer power of our collective (consensus) will, we are not only capable to erect those non-human Constructs in order to self-sacrifice to them, but also to limit their size and power rejecting their main Pythagorean 'Table of Opposites' arguments by fusing those arguments into the one, emotionally unified perception.
That perception is, then, to be hold by consensus among as many of us as possible to prevent the formation of the next generation of over-sized, human-less Constructs.