I think photography's learning curve looks a lot like the piano's learning curve.
It's pretty easy to jump on the piano as an absolute beginner, and get a good working knowledge. You could do it in about two years or less. But going from fair to mastery takes over a decade additional.
I think the same is true for photography. You can learn the craft and theory of photography really fast. And the technique of using a camera really isn't as difficult as people make it out to be. Just practice and you'd get used to it. Mastery of photography is what few people can do, because it's not straight forward. The persons who are celebrated masters of 'photography', it's actually all about their personality (not all about the chin). It's all about their tenacity (not all about the squinch). It's all about their bravery (not all about the lens). It's all about their persuasiveness (not all about the camera).
Steve McCurry had the technique down to photograph the Afghan Girl, but first things first, he got himself standing in front of the Afghan Girl!
Richard Avedon had the timing and technique to capture amazing expressions, but first he'd evoke those expressions!
Photography is all about the everything.