alt Hacker NewsA feature wasn't 10000 loc written by a AI before that no one except the AI with the context understands. If you review all that to understand it fully your productivity gain diminishes, the gain might not go away fully but it is much less when you can be woken up at 3am because of an incident and start reviewing everything.
If I'm the responder it makes no difference to me if an AI wrote it or another worker; it's alien either way.