The only difference between it and "AI-Free," "no-AI," "non-AI," and "not by AI" is that you're using more words to say exactly the same thing. 'zai' -. "zero AI" would be precisely the same.
Author has pointed out an issue that the phrase carries just as much as "pesticide free" would in their own estimation, and simply jazz hands away the fact that the proposal is susceptible to exactly said critique. AND, I'd argue that both 'pesticide-free' and 'zero-AI' are better specifically because they draw attention to the issues caused by pesticides and AI.