Although I love and own the AR (I've got ones chambered in 5.56 and 7.62) I don't agree with this statement. Inside the confines of a home, I'd prefer a handgun with hollow points to a rifle. Especially if there are multiple family members in the home. An AR round will penetrate drywall like a knife going through butter.
“...drywall like a knife going through butter. “
Do some research, you might be surprised what it does compared to say a nine.
https://www.youtube.com/watch?v=AXOIQgfvVlE
You’re right. The article is absolute drivel. I watched m-16 rounds hundreds of yards out climb trees and rip off limbs at any number of angles. You wouldn’t think a round could go in a circular direction.
Have you seen the real world testing?