I see no reason to think that their pay will not increase. They can now produce 2-10x the amount of content. Did compilers decrease engineers pay because they performed a large portion of the work compared to writing assembly?
Machinery and automation also increased the output of individual workers but workers don't own the means of production so they didn't see the benefits of increased income. If you think engineers are any different then I've got a chatbot to sell you
A big issue here is "production" is basically anything that happens in front of a computer. Individual workers will be fired, yes, but entire companies, sectors even, can now be made obsolete overnight. What happens when thinking is no longer a requirement for any job?
Why does the cost of a shirt matter when people can't afford housing? We can create dwellings much more effectively than previous, especially high quality and high density ones