But, contrary to at any such developments in history, the people who are losing out aren't the "poor working class". They already have cultural and political power that they stand to lose. This might still go a lot of ways.

Some of them sure, but you're painting with the broadest brush possible. Do you really think the average artist is not "poor working class", that they have cultural and political power?

Maybe not the average but the power is concentrated in a few and they are also affected. I'm expecting many who collectively do have power to participate in shaping how these things are used and perhaps oppose the big companies.

You imagine there won’t be other limits, but maybe we just don’t know what they are yet? It tends to be true that some things that are easy for people are hard for AI.

This sounds a bit more like a cope than any substantiated claim, what tasks would AI struggle with?

Neither claim is substantiated. We're just imagining different futures. You can imagine what you like.

It is a fair point and I hope you're right because I think humans being second best at everything will probably have bad outcomes for most of us but given the current trajectory, it does seem like a run away train for now.