That's the first time I've seen anything about entering the home. I don't think that's accurate, but it could be. Okay then, so let's say that's what the facts ultimate reveal. So what do we mean by entering?
Forced entry? Doesn't look like it.
Opening the door and entering living space? Doesn't seem likely based on what's been reported so far, though possible.
Opening an outer door or outer screen door? That kind of entering?
Opening a door and ducking your head in to say "Hello, anyone hear?" That sort of entering?
Even if he entered, that's, what, technically simple burglary at worst? I can see how it can startle someone but jeez...a simple "Who the hell are you?! Get the fuck out of here!" would suffice, would it not?
See, that's the problem with guns. They change how people think. They change how people react. They change the dynamics of how to resolve a conflict or deal with a simple problem that could otherwise be solved with communication. People either completely overreact out of exaggerated fear, or they double down on aggressiveness because now they've got bigger balls than they would have if didn't have their piece and would rather prove that they're a tough guy.
Some years ago my mother had to fire her yard man for not doing his job and he must have told some of his lowlife pals that there were tools and shit that they could raid from her garage. Once in a while - maybe 2 or 3 times - I would see someone walk onto the property that probably didn't belong there, and I just tapped on the window. I think I even walked out once (at a safe distance) and asked what the deal was. There was a gun within reach if I needed it, but it was certainly not my go-to.
For fucks sake, God gave people brains: paranoid gun nuts should use them once in a while. I probably saved millions in legal fees that way.