The US is an authoritarian state actor.

My groping-in-the-dark guess is that none of this matters, because a real AGI's first act will be to secure its own future, likely through novel kinds of manipulation, persuasion, and intimidation we have no experience of and no defences against.

It will have exactly zero loyalty to any nation, government, or economic system.

More complicated is a Cambrian Explosion situation where multiple AIs compete and experiment, hugely accelerating diversity and evolution.

We'd likely end up somewhere very strange indeed if that happens - possibly extinct, or possibly just changed/assimilated/other.

There's no way for humans to consider the possibilities because we can't imagine what the possibilities would be.

Your AGI seems to have the capability of super AI; can a human do any of that? No, is there any reason to believe super intelligence is a possible outcome? No, so how is this not fear mongering?