Why are most people ignorant of how fiat currency and central banking works?

Or they are aware but pretend to be ignorant to give such a rigged economic system more legitimacy? With fiat, the government and banks can just keep on printing money indefinitely out of thin air. Yes that causes inflation (in theory), but since such a currency is built on faith rather than commodities, they can easily introduce deflation through another subjective concept. I heavily suspect once automation is cheap and viable enough, then magically everything is gonna get much cheaper.

Also when a government owes itself money, nothing is gonna happen to them (unless through a revolution) because who's gonna come after the freaking government to pay it back? Central banking pretty much allows bankers to collude and implement whatever they want, at the expense of everybody else. Yes I'm aware there's legal limits to what they can and cannot do, but you really think they can't just get lawyers and lobbyists to exploit loopholes and change the laws?