AI assisted code can't even stick to the API documentation, especially if the data structures are not consistent and have evolved over time. You would see Claude literally pulling function after function from thin air, desperately trying to fulfill your complicated business logic and even when it's complete, it doesn't look neat at all. Yes, it will have test coverage, but one more feature request will probably break the back of the camel. And if you raise that PR to the rest of your team, good luck trying to summarise it all to your colleagues.
However if you just have an easy project, or a greenfield project, or don't care about who's going to maintain that stuff in 6 months, sure, go all in with AI.
However if you just have an easy project, or a greenfield project, or don't care about who's going to maintain that stuff in 6 months, sure, go all in with AI.