What a waste of time. Why would anyone argue a case for these things.
Bump stocks are only useful to wildly spray a bunch of bullets, indiscriminately.
So if an angry mob was charging you to cause you harm or kill you and/or your family, you wouldn’t want every legal advantage over that mob to protect yourself and family?
There is a reason the M-16 went with selective fire.
Bump stocks have not been used, to my knowledge, for any faux situation you dreamt. They are just a waste of ammo and a danger to others. If a person cannot protect themselves with a simple auto-loader, then maybe they are not much qualified to be using that weapon, no matter how much it is modified.