They have seen a ton of movies. (One of the few perks of that job). They certainly have opinions on them. And while they might not align with my opinions, I can calibrate for that. But "expertise" or no, they hold information I don't have - how did they experience the movie. They likely have seen it. I haven't. Talking to them increases the amount of information available to me.

I can't calibrate for the averaged-together soup of opinions on online forums. Because everything is average, nothing matters.