There's no way that Mark is saying that it's accomplished through a mystical force (IMO). I think that what he's saying is that it cannot be as simply described by physics as some people represent - or hope.
Sure, but that doesn't exactly make it an advanced topic, does it? The average person has no physics education whatsoever, and their understanding of physics is the worst of popular science. Why expect people to express themselves fluently in a language they've never been taught? And yet, not being fluent in physics doesn't preclude knowing enough about it to have a shrewd notion that that's where the answers lie to questions like "Wow, how does so-and-so do that amazing stuff?". You don't have to be able to design an internal combustion engine to drive a car, and you don't have to be able to explain internal combustion to say "It's got something to do with combustion" (and be perfectly correct) when someone asks you what makes a car go.