I think AI has been used to write photoshop plugins, just wondering if anyone has heard or made an attempt to write a script or plugin using it?

Yes, and results were not good. IMHO you have several problems:

1) ChatGPT learns from the Web, but doesn't take in account how old the information is. So it can use a deprecated API and/or overlook simpler/faster ways of doing things.
2) If it doesn't work, you will have a hard time getting ChatGPT to debug its thing, and possibly an even harder time finding someone willing to debug it for you.
3) Unlike a human, ChatGPT doesn't read minds. It won't tell you that what you ask can be done in better ways, possibly using native functions that you didn't know about, or a script/plugin that already exists.
4) Fundamentally, an AI is a computer. So, "stupid question, stupid answer" is guaranteed. The people who are by trade skilled into asking intelligent questions to computers are called "programmers".

Thanks for the link. oh well lets hope newer versions of AI get much better. I just heard that AI had been used to improve noise reduction in a photoshop plugin but can't remember where I saw it.

GMIC has an AI to denoise and it is probably just as good using the same engine (but offline) where the user owns it.