It makes sense to me. After seeing a bunch of AI slop, people started putting no AI buttons and disclaimers. Then some people using AI for little things wanted to clarify it wasn’t AI generated wholesale without falsely claiming AI wasn’t involved at all.

This comment was written by a human with no check by any automaton, but how will you check that?

Business emails, other comments here and there of a more throwaway or ephemeral nature - who cares if LLMs helped?

Personal blogs, essays, articles, creative writing, "serious work" - please tell us if LLMs were used, if they were, and to what extent. If I read a blog and it seems human and there's no mention of LLMs, I'd like to be able to safely assume it's a human who wrote it. Is that so much to ask?

That's exactly what a bot would say!

It’s more a claimer than a disclaimer. ;)

I'd probably call it "disclosure".