Thus making the Swiss banks sound and flexible

Switzerland recorded a government debt equivalent to 32.60 percent of the country's Gross Domestic Product in 2016. Government Debt to GDP in Switzerland averaged 39.40 percent from 1982 until 2016, reaching an all time high of 51.60 percent in 1998 and a record low of 25.10 percent in 1982.

This the Swiss national Bank, SNB, is not really as much as a central bank as we assume, it does not spend ten years bailing out money losing government programs.  So the SNB can do this:

The Swiss National Bank Now Owns A Record $88 Billion In US Stocks

And because the USA is in serious debt trouble and has rigged rates, the shareholders of SNB get a ride along windfall due to planned volatility. Who owns the SNB, according to Wiki?

As of 2015 the Nationalbank is privately owned,^[8] with the majority of shares belonging to the Swiss cantons (45%) and the banks of the cantons (15%), and the smaller remainder in the possession of private individuals (40%).^[9][10][11] Shares of the SNB existed within SIX Swiss Exchange from 1907 onward.^[12]

So, the American economy is sharing the bailout money with county governments in Switzerland, where it becomes a tax cut, not a bailout.