They are if they are derived independently from the text via discussion here or guesswork. ie. You can guess stuff. They aren't if, um, you raid Eliezer's dwellings and find yet to be published manuscripts, for example. Or torture Eliezer to find out his plans. Any source of knowledge that hasn't passed through the bottleneck of the text at some point.

Dclayh didn't reveal anything remotely privileged. Or anything that hasn't been speculated on ad infinitum.