He really just sounds like Christ in his confrontation with some of the teachers of the Law over their legalism. They were much interested in the legalistic form of religion rather than it's heart. And he was very harsh with them calling them a "brood of vipers". Francis is just using Christocentric and prophetic language here to confront those in the hierarchy who think the forms of religion is more important than the heart of faith which is justice, mercy and love. 

Tradition, law and Dogma aren't bad things in and off themselves because they help us understand the faith and keep it stable. Traditionalism, Legalism and Dogmatism are though and can become forms of idolatry in and off themselves.