The essence of the argument is the emotional appeal of self-defense, which makes these considerations less important. Someone facing a violent intruder in their house is not likely to think about their neighbors. They are going to do whatever they can in that moment to defend themselves.
It's a tricky one. If I fire a gun, I put everyone living immediately around me at risk. If an intruder has a weapon though, does potentially disabling him or her outweigh the risks against everyone around me?
It's something I really struggle to work out, to he honest.