Now my wife, after much shooting practice, and training can shoot a shotgun quite well. She was even shooting skeet with a 20" pistol gripped 20 gauge, very well mind you! I've suggested getting a smaller gauge shotgun for many home owners, including women. NO, it's not the end all beat all, and no it's not best for everyone. Other times I suggest a .38/.357 revolver, and yet other, a semi-auto. It depends on the person, how much the want to learn, how familiar they are with guns and how familiar they want to get with guns!
I don't think it was a terrible suggestion, about any
predator knows the sound of a pump shotgun racking the slide and most times that's enough to end the situation! But anymore, predators are getting more and more brazen!
Then we have to get into the logistics of whether or not a person can/could actually pull the trigger if needed. I've run into many cases where either they admitted they couldn't, or weren't sure they could. Both cases, don't get a gun! If they have even the slightest doubt, that gun WILL be used against them and in at least one more crime.
I assure you, I'm not a Biden fan, I don't much care for any politician any more in fact! But there are many shotguns that are made specifically for home defense, so I can't say it was completely bad advice.