Yes, Chavez did unsuccessfully attempt to seize power. The economic failure of Venezuelan capitalism to satisfy the material needs of the people, and the de facto monopolization of the political system by a minority, had created a system so rotten that the large majority of people were eager to see someone who really meant to make a change, i.e., Chavez.
So a coup is dandy if you agree with the reasons behind it?
Uhm, .. kinda?! Like, isn't a coup just another word for armed rebellion against the government? Which is, basically, any civil war?
I mean, Claus von Stauffenberg and his co-conspirators are considered heroes, nowadays, for trying to kill Hitler, but in the end, what they were trying to accomplish was a coup.
So, yeah, the reasons behind a coup do matter.