Zimmermann absolutely did a lot of stupid things. Giving an interview against the advice of his lawyer. Doing a lot of things against the advice of his attorney. To say anything else is folly. If I am ever on the hook and do something like that, feel free to call me stupid. Should I not say that?
Say anything you want.
But, again, I think Zimmerman acted in self-defense and, for me, that’s the end of the story.