He sure does make some great points, though.
I run a .40 and yeah it kicks lick a mule, but it will also pack a punch with the correct ammo in it as well, maybe even harder than a 9mm.
Its going fast than a .45, but its the stop gap between that an 9mm. Its a nasty round, same with the .357 SIG, its a hot round that packs a punch. A small projectile going fast, creates a huge hyrdostatic ripping hole that closes up, but still will fuck someone up. Besides the magnums, this is as close as you're going to get to a rifle round, which more easily kills people, if the quality of the hit isn't perfect, like a head, heart, lung, neurological shot.
It was an invention to a problem that doesn't exist, but it still kicks ass and is a badass round.