https://thenewamerican.com/us-debt-downgrade-by-chinese-rating-agency-is-inevitable/
Your points and observation are valid. Compared to the rest of the world we are Golden. But our wealth was earned in prior generations, and we are spending our inheritance.
Your presupposing that the American holders of wealth will stand by and let it wither away. I disagree. Certainly folks who don't know about wealth creation, i.e., the Kennedys, will likely go down the drain. But folks like that have financial advisors who earn a handsome living by reinvesting their wealth. Their own self-interest will guard against a contraction. And the Deplorables with wealth won't stand by as the destructive waves of capitalism (and cronyism) chase them.