I’ve not user Klipper in a long while, but would it not suffice if Klipper knew 'Spool has 100m Filament left, print says it takes 110m, throw an error/require user confirmation to continue '?

Definitely! Mostly looking forward to see how/if other printers (especially Klipper) will support it

I’ve seen and used AI for snippets of code and it’s pretty decent at that.

With my colleagues I always compare it to a battery powered drill. It’s very powerful and can make shit a lot easier. But you’d not try to build furniture from scratch with only a battery powered drill.

You need the knowledge to use it - and also saws, screws, the proper bits for those screws and so on and so forth.