I find this hard to believe. I‘m not sure I’ve ever seen llms.txt in the wild and in general I don’t think most tech writing shops are that much on the cutting edge.
I have seen more companies add options to search their docs via some sort of AI, but I doubt that’s a majority yet.
Shame, because it's a bunch of nice looking words - but it doesn't matter if they're completely false.
But certainly it does seem like a potential risk of LLMs that they will synthesize people's notes and early marketing materials into "experience reports" that describe benefits and uses that never actually happened. Potentially these could then become part of training data or future contexts via search for other people writing, further exacerbating the effect. We already see similar phenomenon with human errors getting magnified via word-of-mouth.