Implemented properly (and I've rarely seen it implemented improperly) a curriculum will provide a rounded base-set of skills that a teacher can use as a springboard for further teaching.
I don't see how that suits the minority and I certainly don't see that as Plato's cave. Clearly you disagree - I'm genuinely interested in why?
Have you been in a classroom in the last ten years and what about that experience turned you off modern teaching?
First of all Plato's Cave is a story, told in order to simplify the idea that some people don't know, what they don't know, and wouldn't believe it because it's so far from their reality-tunnel that they can't see it. Or, because admission that they're view is wrong would cause so much emotional trauma, that they refuse to be wrong inspite of the evidence.
I haven't been in the classroom, though my daughter has. And the methods taught at school, are not the way I was taught, and in no way are they superior. But they are off-topic anyway.
Long division, only way to do it. Works every time.
As to Conspiracy theory.
.... "In January 1967, shortly after Jim Garrison in New Orleans had started his prosecution of the CIA backgrounds of the murder, the CIA published a memo to all its stations, suggesting the use of the term “conspiracy theorists” for everyone criticizing the Warren Report findings. Until then the press and the public mostly used the term “assassination theories” when it came to alternative views of the “lone nut” Lee Harvey Oswald. But with this memo this changed and very soon “conspiracy theories” became what it is until today: a term to smear, denounce and defame anyone who dares to speak about any crime committed by the state, military or intelligence services. Before Edward Snowden anyone claiming a kind of total surveillance of internet and phone traffic would have been named a conspiracy nut; today everyone knows better." ...
Does anyone disagree with the above statement? It was not the origin of the term, but it the CIA did infer, at the very least, a change of meaning.