This isn't true, or at least there isn't consensus around that idea all of the time
> doom is always around the corner
That's just the boom and bust nature of the economic cycles. It's true of any other natural cycle, from the fall from paradise to the fall of Rome. I recommend Georges Canguilhem "The Normal and the Pathological", though I must admit I didn't even fully understood that book when I read it as a teenager.
I'm not saying it's true, nor that "most" people were saying it, just that enough loud voices were doing it.
My point was not that (often uninformed) people have been feeding enough BS about the economy for so long that "obvious" is untrustworthy.