Dunno exactly, and excessive devotion cannot be defined by quantity if that's what you're suggesting. To expand on what I said above: "I would actually make the case that the brachot are a safeguard against idolatry."
The mitzvot connect one's actions and the happenings in one's life back to G!d. By being inclusive they prevent a person from idolatry, from excessive devotion to work, to drugs, to isolationist spiritual exploration. They demand of a person full engagement with the world in which they live.
Well said, this also seems like a case to me against fundamentalism of any type, do you agree ?