"In terms of repercussions, are you saying this Texan is now safe? Maybe next time instead of swaggering over confidently to ask him about the shoes prior to stealing them those gentleman will just shoot him in the back?"
You keep thinking of lone defenders, instead of armed communities. Who would dare to be a mugger in a community where people are generally armed? These guys expect their victims to be disarmed, because that's common in cities in the USA today. That's why they even bother to be criminals.
If they tried to shoot a guy in the back, every other guy around could be prepared to shoot back, not just the guy fishing. It isn't one superhero defender of Gotham that is the real power of personal arms.
It's that there are no potential victims at all, so crime like muggings just don't happen, since the likelihood of getting a wallet from someone without being significantly endangered is very low.
This is one reason crime disproportionately victimizes the poor, since they either can't afford weapons to defend themselves, or can only afford crappy ones.
How many crimes do police prevent? Practically zero. They commit orders of magnitude more crimes than they prevent. At best they can investigate and seek to punish criminals AFTER they commit a crime.
Personal arms prevent millions of crimes every year. They keep the crimes from happening at all. Cops don't.
Think of personal arms like antibodies. Vaccination programs seek to create herd immunity, so virulent pathogens can't cause epidemics. Disarmed people are vectors for epidemics of crime, Typhoid Mary's of Tyranny.
"You keep thinking of lone defenders, instead of armed communities."
No i don't. In fact you've made my point for me. It's the strength of the community that matters armed or otherwise.