All but a very small part of what is written or said about retirement investing and retirement funding is really non-testable opinion and actually worthless.
Pundits who advocate oversaving are the least dangerous. The worst they can do is cause you to have more money than you turn out to need.
Occasionally something turns up, like "did you know about this or that discount available to people in your situation".
But 99% of everything else in the money sphere is just bs-including "it works for me", "I feel comfortable with that" etc.
As if one's comfort had anything at all to do with how things turn out. Remember how comfortable we all felt with assuming 15%/year minimum equity returns in the late lamented '90s?
Also, those of us who have had auto crashes generally felt quite comfortable until micro-moments before we got clobbered.
I would say that it might be especially important to be prudent when the societal rules are being challenged in far reaching ways, and when it looks like the only solvent governments may be very young industrial economies that do things quite differently from the US and Europe.
Then there is the explosion in commodity prices- at least one person with a long history of being right, Jeremy Grantham, thinks that commodities will fluctuate as always, but toward higher and higher levels overall.
Ha