It appears that sometimes, Ryutaro Hino's work can be allowed to be uploaded, but other times it's deleted.
For example,
Bishoujo Senshi Sailor Moon#434918
remains and it's his, as well as http://gallery.minitokyo.net/view/434524. But many of his I've submitted are deleted.
Is there a certain reason for this? I always give credit to him, and the scans were just shitajiki he had produced and sold.