An August 1, 2023 article in The Wall Street Journal ("Why America's Gun Laws Are in Chaos - Judges clash over history a year after Supreme Court upended how courts decide Second Amendment cases") aroused my thoughts.
During a class that I once attended, the firearms instructor gave memorable advice: you don't point a gun at someone unless you're willing to shoot them; a good reason for not shooting someone is to avoid being involved in many years of unpleasant litigation; during an ongoing crime you don't want to reveal you are armed since these are the first people being shot; what is considered a self-defense shooting is a complex legal issue.
Thus, perhaps courts would approve of mandating minimal training for gun carrying and restrictions on minors.
I never felt uneasy when patients carried a (licensed) concealed gun in my office, assuming with the police officers that they did and with a few others that they might. One judge quickly signed the concealed carry permit of a nurse working the night shift at a hospital treating addicts, stating she needed a gun.