I wouldn't call it flourishing, but improvement has largely been fueled by spending right? Where would it be without the trillions spent by the fed? Or by the massive deficits we've run the past 7 years. All they did was make one problem significantly worse to temporarily address a different problem.
What we've seen is similar to someone's neighbor boasting about their new BMW, the remodeled house, and the steak their eating three nights a week. Before he drove a 93 Camry, his house looked like it was the Brady Bunch's, and he ate some variety of potatoes every night. But he didn't get a better paying job, find a new source of income, or adjust his budget to pay for all this. He put it on the credit cards and had a friend loan him money. It may look like he's "flourishing", but he's paid for none of it and has no means to do so. It's an extremely temporary change.
The US can't keep doing that. The U.S. finances are the greatest threat to its stability, and I don't think it's something that can be fixed anymore. Regardless of who is elected. The tipping point just may get here sooner depending on who wins.