The economy hasn't collapsed yet. (Which doesn't necessarily mean it won't tomorrow.)
I have a book written about 1930 or so that predicts the longterm failure of socialist systems.
It took 70 years for the Soviet Union to collapse.
When the prediction is made isn't as important as when it comes true.
I bet the book didn't think it would take 60 years from 1930.
While the accuracy of past predictions does not necessarily indicate the accuracy of those for tomorrow, the record should also not be ignored.