"Destroying a nations currency with massive infusions of fake (fiat) money is definitely NOT economically harmless!. Indeed, its exactly the prescription for (finally) bringing great nations to ruin. Krugman is not so ignorant to not know this. Any good high school history class covers this simple fact. So why is he lying to us about it ?"
The whole idea is to create a false sense of "stability" in the short-term so that they can ram home as much of their progressive agenda as possible. When it all comes crashing down at some future time, it won't bother them at all, because if all goes according to plan, they will have already won.
“When it all comes crashing down” is precisely their objective (and thus is synonymous with their “winning”). The crash won’t just happen after they’re done, it will define the completion of their agenda.
They have to know that proposing a stunt like this, with its massive freight of unseriousness, will have the opposite effect.
But then, perhaps that is what they intended.