Please check out the Wilson Combat channel on YouTube and see what Massad Ayoob says about this. He knows as much about this as you do, probably way more. You need to view it.
Saw the video, understand his emphasis on legality - but reasonably sure he’s never fought anyone. I spent about 15 months in combat and I killed a number of men. Likely a whole lot more than most and definitely more than you or Mr. Ayoob.
Each one was shooting at me or the men near me and I was ending the threat. If the guy surrendered, he was safe. If he didn’t surrender, he was dead.
If someone breaks into my home, the rules of combat apply. I’ll face the law afterward if I survive.