Others have already addressed these specific claims, and I'll add that this whole way of thinking (where anything and everything is the outcome of shady "plans" being hatched somewhere) does not generally lead to a good understanding of social problems. But this is not to say that progress in working-class compensation hasn't clearly stalled since the 1970s. Part of the issue is of course that a lot of that putative income has been offset by the huge increase in healthcare and education costs. And that's probably something where policy interventions are warranted, if only to reduce existing market distortions that put consumers at a huge disadvantage.