The newer lower skilled workers improved the most. I know that my art skill has gone from far below average to pretty good with generative AI art tools.

Maybe the whole "people will need UBI because robots will replace all the marginal workers" argument will fail because marginally productive workers will get so much better at their jobs.

In reality, automation and mechanization of manufacturing got rid of the skilled craftsman. Using the assembly line, Ford replaced artisans with people who were much less skilled.