I remember we already talked about this yesterday. I think discussions about LLM training should be happening at the legal level, not technical, unless you want DRM. Personally, I do not want to advocate for DRM. I do not believe that robots.txt is an adequate defense against LLM training, and that the onus of keeping up with all LLM user agents should not be on website authors.
Discussion
It's worth noting that Glaze is neither a guarantee that something won't be ingested into an LLM, nor is it something that comes at absolutely no cost; depending on setting it creates visible artifacts similar to JPEG compression that I have seen artists complain about. I don't think Glaze is relevant to the federation discussion however.