Its a enormous amount of work involved, and a lot of skill. I'm not sure I get the point, I think its like mountain climbing, I want to use my skills to do what only a few can do.
He edits between 1200 and 2200 images of the same scene and it takes a month to edit?
I mean the photos are kind of cool, but not that great. Doesn't seem worth the effort to me, but as long as he enjoys it. If he makes money at it (which I have no idea) even better.