Anyone with a following can use their platform to convince people to see a show if they give their endorsement - hell, that’s the entire career of an “influencer”. Does it work? Mileage varies. Someone like me, who sees everything anyway, is not going to be swayed to see a show by a celebrity who saw that show.
To that end, I honestly love when shows use Lin-Manuel Miranda’s posts to advertise. He is a very heavy hitter in theatre and also film, but his posts are genuine and purely organic theatre kid joy - which is what he is in real life (having run into him at a few shows).
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