Yes, technically speaking the economy finally made a full recovery the day that FDR died (he died in office). So, yes, FDR finally, after 16 years, got us out of the depression by dying.
The problem with the left is none of them have the slightest clue how the economy works. It's really not very complicated but there's not a single leftist out there who even thinks about what makes the economy work. They operate entirely on the head-in-the-sand model.
You probably never even heard of the stock market crash that happened 10 years earlier. The difference is Warren G. Harding was president and he knew to just get out of the way. He died in office and his vice president, Calvin Coolidge took over. Coolidge understood the same principle of getting out of the way of the economy. 18 months later, the economy fully rebounded and went to a booming economy.
The same thing happened in 1929, Hoover was now president and he though he could engineer a solution and just make everything worse. He lost re-election to Roosevelt. Roosevelt ran on a campaign of "change" but he didn't change anything. He took Hoover's policies and doubled down on them. By doing so he made a bad depression much, much worse.
But the American people believed he knew what he was doing and they kept re-electing him. When they realized that absolutely nothing that he did worked to make things better, the government passed a new amendment to the Constitution to never let anyone serve more than 2 terms in office, so we would never have anything like this happen again.
But that never stopped the economic illiterate left from continuing to try to wreck the economy every chance they get. Oh they'll produce all sorts of fake reports trying to tell you that live is wonderful while your sitting in the unemployment line but no Democrat has ever improved the economy. Obama even tried to tell us that his sucky economy was the "new normal". Then Trump won the 2016 election and just blew Obama's "new normal" statement out of the water. Just by being elected the economy skyrocketed. Trump didn't even have to do a single thing. Just the fact that Hillary lost was what the economy needed to rebound.