Rather than ending with it being a holoprogram Troi and Riker are participating in it should have ended this way:
Trip is stuffing his face with popcorn during movie night while pressing his thigh against T'Pol's who is sitting next to him. He begins to choke with laughter at the screen.
T'Pol: Those people look very unhealthy. Who are they supposed to be?
Trip: That's what's so hilarious! This old science fiction has the most ridiculous characters!
On the movie screen Riker and Troi exit the holodeck doors