Prohibition in the US was pretty easy to ignore; alcoholic drinks are easy to make, and the government largely didn't take it all that seriously. For all the temperance crusading that got the law passed, it turned out to be unpopular. Did NZ even try it?
What's the definition of "perfectly fine"?
"there hasn't been a significant effort to re-ban it wholesale at a state or federal level"?
At least in the context of the original parent comment ("doing perfectly fine since prohibition")