That's false. The api was called friends permission and was public. There are references to it everywhere in the web. For example here you have a rando asking about it in SO: https://stackoverflow.com/questions/6392338/what-is-the-diff...
>” Please respond to the strongest plausible interpretation of what someone says, not a weaker one that's easier to criticize. Assume good faith.”
That said, OP’s response seems a bit harsh, as what you said wasn’t “false”, it just wasn’t their intended meaning.