While I don’t know if Wilson is a good guy or not—The Warning Shot as a self defense “tool” makes sense—especially if it works. If the warning shot averts injury or worse, then it served its purpose.
Granted there are those that will argue that a warning shot should never be fired, and perhaps Mr. Wilson intended to do damage but failed to do so—hence his warning shot argument.
Warning shots should never be allowed. When firing a shot you shoot to kill because you are in fear for your life or others. Firing a shot should be intentional and deliberate. “Warning shots” can cause unforeseen damage
I'm retired LE and we were not allowed to fire warning shots. If we pulled the trigger, it was two rounds to center mass, assuming we were firing a pistol. One round for rifle or shotgun.
But I can see where at times they would be needed.
Such as when you want someone to get off your property.
Or they are advancing on you but not close enough to lunge and grab you.