> I feel like people don't care whether you used an AI to write your code as long as it works

Oh, some do; for sure they do. Some put a "no ai" badge on their sites; others add disclaimers to their repos if ai has been used to write the code. But I agree with you about the productivity/output. Developers who refrain from using AI are probably more interested in the very process of coding than in its output. They pride themselves on their craft and craftsmanship.

We also typically value things that are not tied to productivity/output, like product quality/reliability, security, and our own agency.

I want to be free to read, write, run, and share code, now and in the future. Relying on centralized services to do it for me (by extracting knowledge from countless other people) is certainly not a resilient strategy.