You’re thinking of the Executive Producer title, which indeed often just means their name is attached to the project to attract funding. But each production us

You’re thinking of the Executive Producer title, which indeed often just means their name is attached to the project to attract funding. But each production usually has a single actual producer with great authority, traditionally including final cut in Hollywood: if they don’t like the finished movie, the producer may hire another director to shoot more footage and re-cut.