The line being discussed in this thread can be abstracted to the question of useful labour in the LTV; if we are discussion the LTV then we are discussing the theory which was advanced by the Western European political economists, and the objections which they countered or in some cases didn't counter.
At the very least, it seems ignorant to discuss a theory while not taking into account the established literature on the topic.
At the very least, it seems ignorant to discuss a theory while not taking into account the established literature on the topic.