alt Hacker News> I can definitively say llms.txt is not used by any AI players.
https://developers.openai.com/llms.txt
https://docs.anthropic.com/llms.txt
https://geminicli.com/llms.txt
https://github.com/llms.txt
https://docs.aws.amazon.com/llms.txt
https://openrouter.ai/docs/llms.txt
OP clearly meant that the AI players are not reading and/or honouring llms.txt of other websites when scraping.