Was Tim Clemente lying that they have it, or are they lying that they don't?James Clapper was caught flat-out lying about even the metadata collection. Are you going to believe Clapper and Obama about the content?
Obama doesn't even know everything that's going on below him. He could find out, but he's neither smart enough nor concerned enough. He's also not brave enough (because they'd want to kill him).
This is not the only source stating that the contents are stored.