"Backrooms" is the theatrical debut for 20-year-old director Kane Parsons. A24 YouTube is the world's biggest video site. So it makes sense that young directors would distribute their movies there, and find big audiences. Now Hollywood has realized those same directors could make "real" movies, and get big audiences, too. Hollywood has been struggling to compete with YouTube for years. Now it's trying a new strategy: hiring YouTubers. The early results look promising. This weekend, "Backrooms,