Well, to my understanding it is HOW he did it, that is the rub.
Chavez never put himself out to make government support to lift the poor out of poverty and ignorance a right. He made it very clearly a gift, personally, from himself, through these special "missiones" (into which there is apparently no insight or oversight from then government itself).
And at the grass-roots level, the distrubition of these goods was left to the kind of "neighbourhood watch" things, these "colectivos". And then, apparently making the military aghast, Chavez went and armed the "colectivos" as well. So if, or when, the stream of goods to distribute to those selected as worthy gets jittery, the "colectivos" aren't going to like it, and now they've got guns...
Finally adding that the Venezuelan justice system has been pretty comprehensively gutted. There is an opposition, and Chavez isn't ostensibly anti-democratic. It's just that the amount of rubber legislation around has meant that every time the opposition threw up someone who might turn into a leader to rally around, the legal system has been used to put them in hock.
The man was a populist politician to the bone, and that should give anyone pause. As for his legacy, I'm thinking along the lines of comendable effort in some ways, but horrible execution in many others.