There is a difference between knowledge of filmmaking and filmmaking knowledge. To succeed, you need both. Do you know what the difference is and why it's important? These courses will provide you with the answers.
Because anyone can get access to a cinema grade camera, anyone can be a filmmaker. But unless they go to film school, they will not have the knowledge of filmmaker necessary to succeed. They don't know what they don't know or why they even need to know it.