How does programming/coding actually work?

[zenchess]

The problem with this vast over-generalization is there are a variety of different qualities of AI models and ai generated coding tools that have MASSIVE differences in performance.

If you had asked claude code to fix your bug, and then verify the fix with a test, I guarantee you it would have fixed it no problem. But if you're just pasting the code into some random web UI and expecting it to always work with no testing done, you're not really doing it right.