It looks like you're suggesting that AIs that mirror human values must be implemented in the way humans really work

I'm saying that a system that's based on utility maximizing is likely too alien of a creature to be able to be safely understood and utilized by humans.

That's more or less the premise of FAI, is it not? Any strictly-maximizing agent is bloody dangerous to anything that isn't maximizing the same thing. What's more, humans are ill-equipped to even grok this danger, let alone handle it safely.