And why should I care about the opinion of some no-name professor? There are a lot of economists and professors who aren't Marxists that I wouldn't trust for any financial or economic advice.
But that's why I also mentioned the legal aspect: it is a point of statute (as noted in the Clayton Antitrust Act of 1914) in American law that "the labor of a human being is not a commodity or article of commerce."
I want my large lawn mowed. I put up a sign: “Mow 1 acre. pays $20.” I will get no one. Put up a sign that says “Mow 1 acre, $600”. I will get 100s of takers. So the trick is to set a price point FOR LABOR between $20 and $600. Get it LABOR IS A COMMODITY.