Sure they do. They aren't stupid.
They simply want what they want, how they want it and when they want it. They PRETEND whatever their agent TELLS them to pretend and since they are ACTORS, they do it well.
Sadly, people TEND to believe those who are handsome/ beautiful and famous.
They are selfish and immature, NOT caring about anyone else but themselves. Hey, they are actors who MUST have a self image the size of Jupiter: