I don't think everyone is entitled to wealth accumulation. Housing/health/food security, absolutely, but being able to build wealth by making enough to save 20% of your earnings is beyond a basic entitlement. I doubt most people would agree with you on that.
You could more accurately title this as "Minimum wage needed to live like an average boomer in 1975". Still fucked up, and not misleading.
Edit: you added a bunch to your reply. I think the framing of this is just wrong, frankly. Wages absolutely have not kept up with the cost of living, but you're going beyond that and saying everyone is entitled to the financial security of a middle-class earner. It's a good goal, but not an entitlement, and no reasonable person would frame that as a minimum cost of living.