My experience is that you get out what you put in. If you have a well-defined foundation, AI can populate the stubs and get it 95% correct. Getting to that point can take a bit of thought, and AI can help with that, too, but if you lean on it too much, you'll get a mess.

And of course, getting to the point where you can write a good foundation has always been the bulk of the work. I don't see that changing anytime soon.