From the way you phrased this, I think You may have missed the context link a couple comments above. Everyone is aware of what hubris means and that it's not a virtue per se. The point of the linked page is that it's (somewhat tongue-in-cheek) taking three vices and positioning them as virtues in a narrow context. It's just semantics; the saying could easily have used synonyms that have positive connotations, but using negative words instead is part of the joke.