What is this "lie" you speak of? Actually, can you please list the other ones too? It's not fair to readers to make a tantalizing claim like that and then not give them enough information to make up their own minds. It's practically dripping with duck fat.
Re Bookface: https://hn.algolia.com/?dateRange=all&page=0&prefix=false&qu...
Re YC founder usernames- it can't be secret if it's in the FAQ, right? https://news.ycombinator.com/newsfaq.html#yc.
None of these things are secret and to the extent you or anyone is curious about them, all you need to do is ask.