No, it would only imply that the worker/retiree income ratio (and tax/pension burden) are somewhat constant which is arguably the case; german pensions specifically rise with wages and get adjusted for inflation.
Productivity gains on the other hand get easily eaten up by increased consumption/expectations, or are overstated to begin with: producing 5 times more TVs/ipads does not make the plumber cheaper (nor a house), and unaffected professions actually suffer (=> baumol effect).
People automatically get a higher pension because they make more money? Without actually paying more into the system? That's an obviously flawed and unfair system, bound to fall over no matter what.
Productivity gains on the other hand get easily eaten up by increased consumption/expectations, or are overstated to begin with: producing 5 times more TVs/ipads does not make the plumber cheaper (nor a house), and unaffected professions actually suffer (=> baumol effect).