It's useful to have the small functions all written.
I program mostly in VBA these days (a little problematic as is a dead leanguage since 2006 and even then it was niche) and I have never recived a correct high level ""main"" sub but the AIs are pretty good at doing small subs I then organize.
And yes, telling me where I make errors, they are pretty good at that
At the end of the day I want reliability and there is no way I can't do what without full review.
The funny thing is that they try to use the """best practices""" of coding where you would reasonably want to NOT have them.