“An open garage at 1:00 in the morning is not “bait”.”
If there is a man in the garage, hiding in the shadows with a loaded shotgun pointed at the door, then yes, it is.
That’s not what happened.
And he should be allowed to shoot notwithstanding, because someone who enters a stranger’s open garage at 1 am is up to no good. (Unless you don’t believe in the Castle Doctrine, that is.) The police “bait” criminals in this fashion all the time, albeit not necessarily with deadly force in each instance.