Not sure what you're trying to get at. He eats meat and wants to respect where it came from rather than grabbing a factory raised, killed, and processed McRib and not thinking about it.
That sounds like the right way to me if you're going to eat meat. Personally I think it's a bigger problem when someone doesn't know or care (especially if they don't want to know/care) how the meat ended up on their plate.
Do you truly believe that someone who would kill and butcher an animal is a threat to _you_?
> "He cut the throat of the goat with a knife, which is the most kind way to do it,"
Not everyone with a homestead does that though. I know it's the traditional Jewish and Islamic way of doing things but it's cruel to drown an animal in its own blood or letting it die slowly from blood loss when you could just disable the brain in an instant.
Given his experience presumably killing a variety of animals, I wouldn't be too anxious to take him on.