They are doing it for the money and attention. Like a problematic child or domestic pet, it's not all their fault - blame the parents.
Hardly wrote a single line of code myself.
Just crossed 372 sign ups and 73 paying users.
AI has been extremely valuable to me. Objectively speaking I have already gotten thousands of USD in value out of it.
Just my anecdote.
How do you plan to maintain it?
Have you added a big feature after launch that required changes to multiple parts of the codebase?
I doubt that a codebase almost purely built with AI will survive in the long term. If there is no developer that understands what is happening, after a while the AI will start running in circles due to a lack of guidance and new features or patches become almost impossible to push out reliably.
I added a huge feature, the AI sprite animator, which involved a massive complex diff across much of the codebase and database schema.
That new massive change is now my primary source of revenue.
I understand what is happening.
I appreciate that you are so concerned.
I've found it's very useful at any scale and you can always understand what's going on.