The effective range of a scattergun is about 25-35 yards. The range is even less if you have an 18 1/2” (legal) barrel since you don’t give the propellant enough time to push the pellets.
And after about 100 feet, individual shotgun pellets tend to go off and do their own things.
So this statement: “It (the AK) was never intended to protect a family after a natural disaster and is ill suited to that purpose.” well, besides its risibility, maybe true but only if you can persuade your target to stay within the maximum lethal range of your shotgun:
“Excuse me, Mr. undead walker person/looter with my foodstocks/scavenger escaping with my daughter .. would you mind terribly coming in a hundred or so yards closer so I can shoot you?”
Buy some slugs, Foster slugs. Buy some slugs for you 12 gauge ... and stop with the silly mischaraterizations. And serious home defense shotgun should be shot for patterning, to know what the particular gun will do with particular rounds fed to it, 12 or 20 gauge.
I’ve put plated OO buck through a deer and had them stop at the hide on the other side...at 60 yards. Nobody’s very froggy when their lungs start filling with blood.