Its free at the endpoint for user. That's what the "free" means here. No one is pretending that resources for things like roads, police, firefighting, primary schooling and others come out of nothingness and don´t have any cost.
Its not. For the US, energy use per capita has been trending downwards since 1979. For the developing worlds, increase in energy usage is tied to increasing living standards.
> When did the soviets deny physical phenomena like the photoelectric effect? I believe they had issues with the kind of non-falsifiable metaphysical arguments put forward to try to explain or understand quantum mechanics.