What do you mean, 'that's not true'? It's absolutely true, there's always bigger calibers than .22LR.That’s not true. Have you ever studied this, for example in defensive calibers there’s very little difference in effectiveness between the various service calibers like 9-40-45, heck statistically on humans a good 9mm isn’t less effective than a .44mag. And those we can legitimately get into caliber wars over. but all are much more effective than a .22lr. not to mention it’s a rimfire.
When we take people out black bear hunting behind dogs we don’t mind if they use .243-45/70 or 12-20 gauge slug shotguns or .357 and up handguns. We don’t want them using less than that, like wise if they show up with a 50BMG we’d laugh them out of the woods. Again the right tool for the job within certain perimeters. Doesn’t have to be the biggest.