Actually, IF the people of Mexico were indeed paying honor to the PERSON of the image, then there would be no reason to crawl for blocks on their hands and knees. All they would have to do is to pray to the virgin in the quietness of their room. I'm sure they have those little statues of Mary, or at the very least, those little tiny cards adorned with her picture. The very fact that people are willing to crawl for blocks to venerate an image when they can do it in their homes is a blatant indication of idolatry.
This isn't any different than the Baal priest during Elijah's time, flaying themselves before the altar hoping for a miracle from Baal. One would have to ask if the Lady of Guadalupe is asleep?
BTW, I would LOVE to get a chance to see the actual tilma.
Why?