I've seen this argument before and found it wanting. Hitler didn't ultimately succeed, but he sure as heck got pretty far with his plans. So, if there are some entities in the AGI population that eventually get the idea to try it, that's likely all that matters, and not what any average of the population is.

An NGI started WW2, so why wouldn't an AGI start WW3?

"Demonstrably unfriendly natural intelligence seeks to build provably friendly artificial intelligence"