We are all engaged in this "exercise in manipulation of myth" in this very discussion, and so you either missed the point or are engaging in dishonest rhetoric intended to further your goals in this manipulation of myth. Out of the principle of charity, I'm going to assume the former and will attempt to clarify.
First of all, that money is a social construct is a fact, not a pretense. Money only exists because of laws that make it so, and those laws can be changed. Not easily, of course, but over time a coalition could be built that changes laws for the better. (Obviously there are forces at play whose consequences need to be kept into account, just like you can't go against physics; there's no magical or wishful thinking here. But the behaviors of the central bank and treasury, for example, are decidedly not physics. They're a political choice.)
Recognizing that those laws can be changed opens up space in public debate that isn't there otherwise. It opens up new possibilities for policies that can lead to the improvement of lives. I'd go even further and say that it's one of the most important shifts in public consciousness that could and should be made.
But that's admittedly fairly long-term thinking. If you're only concerned with policy that has short-term effects (and can be achieved in the short term), then perhaps it makes sense that you don't personally consider my previous comment very useful. You may want to focus your attention on one of them, but both short-term and long-term thinking are important.