I have mentioned before that I took martial arts and the one thing they drilled into us? If you have the option of leaving the dangerous situation, do so. All the techniques and tactics they taught were for the sole purpose of changing a dangerous situation you can’t get away from into one you can. Even the specific example I mentioned in another topic was about that.
And you are also right that the last thing armed response needs is a bunch of amateurs hanging around and making a mess of matters.