It literally contains as much information as anybody could potentially hope for (public information anyhow - excluding interviews and the like). If they happen not to be able to distinguish between a “page does not exist” (90%~ of cases IME, ie no GH account), or their ego is so inflated that they cant be bothered to spend 2mins asking their CTO (or dont even have one or trust them), thats a different story and its on them. The signal is there.