You're basically suggesting that people learn the current fashions. Which is fine, as far as it goes, just stay skeptical, because unlearning falsehoods is extremely difficult for most people. Empirically speaking, it seems almost (but not absolutely) impossible for humans.
People should learn economics like you learn physics [1]. You don't start out with string theory (fortunately). You start with the Greeks, then move to Galileo, Euler, Newton, Laplace, Maxwell, Bohr, Einstein, Feynman, etc.
In macro economics, that might read: Bastiat, Locke, Smith, Mill, Malthus, Marx, Engels, Mussolini (who would typically be expunged, despite his continuing relevance, for obvious political reasons), Mises, Keynes, Hayek, Friedman, Rothbard.
[1] There are obvious differences, of course. Economics has more forks and fewer merges in the tree of thought (which makes knowing the history all the more important). And unlike physics, old, discredited theories get dug back up, polished, and repeated for a new generation (how many times do we have to endure CNN talking about how a hurricane will help the economy before people understand the broken window fallacy that Bastiat articulated in 1850?). And economics also overlaps with both politics and morality. Value-free economics exists only if you consider "you could do X, but more people will starve" to be a value-free argument.