To flip the coin, some have a real or imagined problem with the 1911. I know his statement about the cost to achieve reliability is false in my experience. Like any gun, they sometimes can benefit from some tuning. But to claim that the design, after 110 years, is inherently unreliable is a bit much.

The fans/detractors of any platform can cherry-pick reasons to justify their position. I've seen Glocks with problems too. I wonder if he would prefer a revolver over a 1911?

He's just "talking his book". He doesn't want to teach users of 1911's. It probably simplifies his life if everybody's carrying the same platform.