User wants a program to do X, so they ask AI to do it, and it gives them a program to do X.

If user had written X themselves via thinking, they would have discovered along the way that they also needed Y and Z. That X breaks A, B and C. That D is now redundant and can be dropped. And finally, E already implemented X.

I'm certain this is exactly why so many applications and websites have been /breaking/ in baffling ways recently. Things that used to work now don't, pointless new features etc.