Corrected entry: When God tells Bruce the two rules he says Bruce can't tell anyone he's "God" and he can't "mess with free will" but by telling Bruce himself what he can't do just by explaining the rules God himself is messing with Bruce's free will. So by God's own reasoning he's breaking his own rules.
Correction: If your parents tell you to do your homework, it's not violating your free will, because you still make the choice of whether or not you do as you're told. If they use supernatural powers to mind control you and literally force you to do it, now they've violated your free will.
Free will only applies to freedom of thought, not freedom of action.
Correction: The rules are for Bruce, not God. But the free will thing could just be a limitation of God's powers, not a "rule". If I tell you that you can't lift a mountain, I'm not messing with your free will, just stating a fact. And/or just telling Bruce he can't tell anyone he's God isn't about free will, simply an "actions have consequences" thing. If he breaks the rules he'd lose his powers or similar. I mean all of us have free will, but if we exercise that in a harmful way then we go to jail or similar. That's not "messing with our free will", just natural limitations.