Yes, that’s fair. A friend once asked what the distinction is between authentic and genuine. This is, I think, a great example.

The piece is authentic—as in, “that’s so Sam!”—but not genuine, as in, “I don’t believe he’s reflecting his intentions.”

This could be splitting hairs, I don’t know. The terms are different in my head but rarely do I come across an instance where it’s at all clear how.