labor theory of value is utterly retarded and directly appeals to egotistical sense of being downtrodden, commonly referred to by new age literature as "the wound of the ego"

it's a free pass to econometrics and centralised determination of prices that doesn't work because the reality is created by the interaction of billions of people's preference scales, which aren't even necessarily linear because in many cases two options are equal and a coinflip is required when either can be satisfied by one option, on the same level of the scale

what's interesting about the name Veblen used is that Mises Action Axiom more or less points out that the prime motivator of human action is the relief of discomfort (aka pain, in extremis)

leisure = relieving tension

'labor theory' = accumulating tension

marx' rhetoric is literally the opposite of the way that nerves work, appealing to neuropathology of some kind (ie psychopathy)