If I witnessed your type of response (seemingly defensive) within the first hours/days of starting, I would begin to wonder what kind of change I could impress even if I did take the "approved channels". Ideally, we would pick up on all of this during interviews and go our own ways. It doesn't always work that way though. There is /something/ we have to offer each other.
You put up your defenses, I put up mine. And in a short time you're looking for a new hire, and I'm looking for a new place.