Without meaning to reflect in any way on the worthiness of people's work in the gallerys, keep in mind that the gallerys used to be structured differently than they are now. Earlier on, every time a comment was posted to a photograph, the 'graph moved back to the beginning of the gallery postings. Thus, for example, one of my images that received a LOT of comments kept being returned to the beginning of the list where it could, in effect, start all over again. When Sean changed the default way that images were displayed in the gallery, 'number of views' declined considerably because they'd get to the second or third page much faster where fewer people bother to look. Also...the number of subscribers posting images has vastly increased so that also propels them along more quickly as well. And folks who only post to their own gallery rather than the standard or critique gallerys 'disappear' even faster. Lastly, of course, the gallerys are now subscriber only, where once they were able to be viewed by anyone visiting this site.
Another thing to consider is that some people do not consider posting scans of their work to fairly represent it's considerably higher quality when seen 'in person', so many of those folks rely on print exchanges and such to have their work seen...not on views in the gallery.