Maybe because it's entirely an artist's eye, patience and skill that makes an image and not his tools.
People who earn less than half of their income from photography are amateurs. This has nothing to do with the quality of their photography.
No matter how advanced your camera you still need to be responsible for getting it to the right place at the right time and pointing it in the right direction to get the photo you want.
You need to learn to see and compose. The more time you waste worrying about your equipment the less time you'll have to put into creating great images. Worry about your images, not your equipment.