The agricultural and industrial revolutions "weren't labor displacement", they were technological and social changes that happened unevenly and gradually in time and space and which resulted in labor displacement, but they were not the only cause, and they didn't happen BECAUSE of labor displacement. I would argue the subsequent labor displacement caused a minor part of the social gains to be later distributed and realized through class struggle, but that's beside the point. Most wars cause mass labor displacement and military technological advancements that later translate into society as a whole. Are you prepared to argue for wars? If you are American, you are experiencing firsthand the effects of what once was a major part of your industrial labor being absorbed by China. It has led to massive inequality and erosion of standards of living in the US. Not so much for the Chinese working class, which has increasingly improved their standards of living. Are you going to argue for it? I think if we only look at things from a limited perspective, and in this instance a technocratic and teleologic view of history, as in history has a designed finality and this finality will be achieved through unrestrained development of production forces, you are bound to quietly take part in the destruction of society and nature, now viewed as externalities, and accept the worst of atrocities in the name of "advancement", while most of any gains are captured in the short term by a minority.