The idea that global reserve currency status for the dollar is good for "America" is based on the mistaken notion that the interests of the US regime and the interests of ordinary Americans are one and the same.
The fight between Russia and NATO is not about "democracy versus authoritarianism." Rather both the US and Russian states are doubling down because they are doing what states do: seeking power.
A central tenet of Keynesian economics is that governments must run budget deficits to stimulate economic growth. But government spending actually shrinks the economy.