Poor the people/assistants that make mistakes when they have to fit, intrgrate and modify all AI-written code.
My experience is always that there is a complexity threshold at which things start to take longer, not shorter, with the use of AI. This is not one-off scripts or small programs. But when you have systems that touch a lot of context, different languages and parts of the stack, IA sucks for how to design that code except for probably some advice or ideas. And even there it does not always get it right.
Give any AI any atypical problem and you will see it spit big hallucinations. Take the easy ones and then, yes you are faster, but those can and have been done 1 million times. It is just a bounded (in complexity) accelerator for your typical, written many times code. Give it assembly to optimize, SIMD or something with little documentation and you will see how it performs. Bad.
It is the tool for one-off scripts, scaffolding and small apps. Beyond that, it falls short.
It is like a very fast start with a lot of tech debt added for later.