Its not denying families the ability to protect themselves from anyone unless you are on the run from the kgb. You prevented a home invasion with a gun. Could you have done it with a revolver or a shotgun with internal mag?
Also, you are right that they aren't going to sell but they should in my opinion.
I didn’t do anything as I wasn’t home at the time. In our case the mere presence of the gun caused the intruder to flee, so the type of gun wouldn’t have mattered. However, if there is more than one invader or if the criminal is using a standard semi-auto, being outgunned by them is going to put the victim at a significant disadvantage.
There is a reason 99% of beat cops no longer carry revolvers but carry semi-automatic handguns now. Also, the shotguns that used to be in the trunk of the police cruisers have been replaced with rifles.