If you count all those people who have smart phones with cameras, that is a large population. But I think you (and I) might define photographers differently, and that is a small population. Amazon is just getting out of the photography business, or at least they are saying it doesn't add much to their bottom line.
Great set of photos. I've been a few times, but never in winter. I live just south of Tucson, and read where the South Rim has had 155 in of snow so far this year.