The irony is impressive but the advice could be a lot worse. He's comparing the choices of AR versus shotgun, in which case I'd pick an AR every day and twice on Sunday, but I'd pick a 12ga double over a LOT of other choices for HD.
Still happily answering to the call-sign Peetza.
The problem, as you so eloquently put it, is choice.
He is no fool who gives what he can not keep to gain what he can not lose.
-Jim Eliott, paraphrasing Philip Henry.