Notice how he conspicuously avoided any discussion of how we determine if the threat was what it was supposed to be when the criminal gets away or ends up dead. For Ayoob, and most of the gun-rights nuts, every gun owner is to be believed. I guess this is their extreme version of innocent until proven guilty. It's convenient for adding up the numbers and protecting each other, even when they do wrong.
Underlying this gun-rights extremism is the faulty premise that the gun owner's life is worth more than the other guy's. Can you shoot someone for looking at you sideways? Yes, absolutely, as long as afterwards you exaggerate just a tiny bit the look. This, of course, goes hand in hand with the famous advice about center of mass. Dead guys cannot tell us their side of things.
If you think that doesn't happen and if you think the increase in justifiable shootings has nothing to do with gun-rights fanatics like Ayoob preaching his bullshit, you'd be wrong, dead wrong.