Contrary to what many modern economists say, increased saving is not a problem for the economy. The real problem stems from declines in production and saving, and these often result from central banks' monetary policy.
Mises points out that eugenicists’ aim to improve the “quality” of the human race is an incoherent and meaningless goal: there exists no clear and objective standard by which the quality of human beings can be measured.
Medicare for All advocates claim they are increasing access to medical services. But the plan mostly just increases demand without increasing supply. The "solution" comes later with price caps, tax hikes, and shortages.