> The UI appears much more user friendly, but really is just broken in multiple ways where the much-patched 1980s software it replaced was user-unfriendly but largely worked.

LLMs don't magic away the need for careful and extensive testing. Good code still takes a lot of time. But it's also a lot less time than before.

I suspect a lot of problems come from people trying to one-shot entire apps, or from those who do not have the relevant experience or knowledge to understand that close-with-a-nice-modern-GUI is not nearly good enough.