That is why it is so popular in Hollywood.
That, and Scientology deliberately targets wannabe "stars" since those are the types that need external support from all the rejections that they experience when "failing" to get callbacks from all the casting calls they must chase after.
And when they get lucky, Scientology benefits in many ways.
It was reported that Cruise, on at least one set, had invited the recruiting arm of Scientology to offer "free" massages, weirding out the saner cast and crew.