If you zoom out, debt defaults, bankruptcies, currency collapse and other "doomer" scenarios happen all the time. On average countries default about 3 times every century.

Of course making short term doom predictions is a mistake. The probability of a one-every-33 years event happening next year is very low. Doomers, just like anybody else predicting the future, care more about clickbait than being right.

Still, we should not discount the possibility of a major crisis happening in the next 10 years. In the 20th century the US defaulted twice (Roosevelt, Nixon)... and it was the wealthiest nation! Others did much worse.

Over the next 100 years the probability of a default is very high.