Time, feature changes, bugs, emergent needs of the system all drive these sorts of changes.
No amount of "clean code" is going to eliminate these problems in the long term.
All AI is doing is speed running your code base into a legacy system (like the one you describe).
Are you implying legacy systems stop growing because I didn't mean to imply those companies stop growing.
Im saying that in the before time, complexity emerged over time (staff changes, feature creep). AI coding (and its volume) is just speed running this issue.
So complexity is an issue? I don't get it. SFDC is an incredibly complex system that makes billions of dollars. Tell me why I would NOT want to be able to create a system like that with an automated tool?