Why would you say something like that? There are messages on THIS forum that discuss it. You never hearing of it does not = "made up".
Simple Google Search "Applecare Keygen" and you will find plenty of people talking about it.
where are the links to those "discussions" and how do they prove there is a keygen for them ?
i hope you do not mean this thread
https://forums.macrumors.com/threads/690859/
becasue maybe you should re-read it.