When you’re required to approve thousands of lines a day (code you can’t possible understand), it certainly IS causing issues that didn’t exist before.
Every study I’ve seen correlates the use of AI with large increases in the number of bugs. Look at Amazon dialing back AI after massive outages. Microsoft patch Tuesday releases are bricking computers (they even managed to break notepad somehow). The rash of Facebook bugs also coincided with their move to AI. Leaks from Google have engineers saying AI either doesn’t save any time because it takes so to remote stuff or it causes breakages if they speed up.
These companies can afford to get the best devs. They have access to essentially unlimited token budgets. They have STILL fallen off a cliff in quality.
What more proof could there be that this isn’t sustainable?
A correlation-causation link between AI use and these bugs has not been established. Until it has proven to come from the region of AI-pagne, it's just sparkling enshittification.