One reason the target isn't zero is price stickiness. For instance: people react irrationally to drops in their wages, but, obviously, the price of an hour of labor can't be steady: it moves up and down just like anything else that can be bought or sold.
More like, people don't behave as you would expect if wages were a purely economic transaction.
I don't want to over-sell "rationalism". But loss aversion is extremely powerful.
It's just a group of independent people who decided: We'd like to print some money. And Hyperinflation has nothing to do with government failure.
Only delusional people or people with an agenda would argue against there being any connection between inflation and the government.