One quibble I have with this: the items on the Joel Test are all language-independent, even if you're using a minor language with poor presence on GitHub. But that's not the case with AI codegen. GPT-3.5 was downright terrible at F#, and though Bing+GPT-4 does seem a lot better I'm not sure it's actually good enough for professional F#. I also doubt AI codegen is useful for Scheme/Racket developers who create DSLs (and of course it's totally useless for proprietary languages). So I am not sure AI codegen fits with the other items on the test.
In general I am concerned that LLMs will discourage innovation in programming language design - why write a better Python if GPT can just automate the tedium away?