The country went to shit before Chavez died as a result of many backing away from trade as a result of US demands as well as a slew of bad policy choices that turned them from a food exporting nation to one that imported food which collapsed the economy. Chavez and Maduro instituted price controls which have harmed the agricultural economy significantly which further harmed things.
That being said while their results were bad their intentions were good which is not going to be true of whatever puppet government the USA would install.