Indeed. My roommate has just been put on a new project at his workplace. No AI involved anywhere. But he inherited a half-done project. Code is even 90% done. But he is spending so much time trying to understand all that existing code, noting down the issues it has which he'll need to fix. It's not just completing the remaining 10%. It's understanding and fixing and partially reworking the existing 90%. Which he has to do, since he'll be responsible for the thing once released. It's approaching a point where just building it from scratch on his own would have been more time efficient.

It seems to me that LLM output creates a similar situation.