I don't see it either. The context switch between being in the zone/flow and writing the exact code I'm thinking of to suddenly reviewing blocks of foreign and quite possibly wrong code seems like a net negative value proposition. I can't even get autocorrect on my phone to do the right thing half the time.

Writing code is easy. Architecture, refactoring, and solving business problems are the hard parts of the job.

Writing new code is also generally the most rewarding aspect of the job. Co-pilot promises to turn that into just another unrewarding chore, like slinging 3rd party libraries together.