I'm gonna just take a shortcut, and watch the movie, then make up my mind. Astroturfing or not, making up your own mind is part of the fun of being alive. Then "a genuine fan or a paid account" doesn't even matter anyway, because they're both as important when you make up your own mind.
Speaking about that, have you seen the movie yourself?
So the response to a deceptive promotional campaign should be, just get a ticket and see if what's promoted is good?
No, but how would you even know if it's deceptive or not? Your assumption seems to be it is. I'm saying we can't know, unless you actually seen it.
What would be deceptive, in the hypothesis of the other user, is the promotional campaign, not the movie itself