Maybe it should be. The system here in the US has produced some great innovations at the cost of great misery among the non-wealthy. At a time when technology promises an easier life, it only seems to benefit the wealthy, while trying to discard everyone else. The light at the end of the tunnel is a 1%-er about to laughingly crush you beneath their wheels.

I don't think this is the strongest argument. Every technological revolution so far has initially benefited the wealthy and taken a generation or two for its effects to lift the masses out of previous levels of poverty, but ultimately each one has.

To me the stronger argument about AI is that this revolution won't. And that's because this one is not really about productivity or even about capital investment in things that people nominally would want (faster transport, cheaper cotton, home computers). This one is about ending revolution once and for all; it's not about increeasing the wealth of the wealthy, it's about being the first to arrive at AGI and thus cementing that wealth disparity for all perpetuity. It's the endgame.

I don't know if that's true, but that's to me the argument as to why this one is exceptional and why the capitalist argument for American prosperity is inapplicable in this case.

I don’t know about that. The poor from just about every other country in the world seem desperate to live in America. While American capitalism has many faults, oppressing the bottom quintile is not one of them. The US median income is consistently top ten globally.