I don't think anyone claimed that the new jobs would be replaced one to one with jobs maintaining the new technology, just that some of the new jobs would be in

I don't think anyone claimed that the new jobs would be replaced one to one with jobs maintaining the new technology, just that some of the new jobs would be in maintaining the new technology and some would be in new industries that we haven't even thought of. For a big historical example of this, look at the decrease in labor usage for farming over the last couple centuries. Where did all the people who used to work in agriculture go to? Like 1% of them now remain on the farms, maintaining the technology that displaced the other 99%, who are now dispersed across whatever other modern industry that we didn't used to have (and, we'll note, the pundits at the time highly doubted that most of the 99% being displaced on farms would find be able to find alternative positions).