I asked ChatGPT if they care and the answer was No. It wont hurt doing it I guess but ChatGPT says they don't take that into consideration especially for SEO purposes.

Definitely worth it. I work at Mintlify who does it for dev documentation sites and can attest to the boost in SEO/GEO traffic which comes from it.

Thanks! That’s great to hear.

llms.txt for others who don't know: https://llmstxt.org/

Thanks for sharing that!