I guess I am not familiar with the situation out west. If multiple cameras are getting hung by a water source, it does seem like it's getting out of hand. On the other hand, at least you know where you don't want to hunt because people have marked where they plan to be
Overall, I'm not opposed to cameras. I use them in the midwest on private land and honestly think they may be more of a detriment to me than an aid. In some cases they have certainly helped me pattern deer, but I'd say more often they cause me to pass up something that I probably shouldn't have (because I'm trying for a bigger one we have a pic of) or make me feel like nothing is coming by a spot (lose confidence) when in reality the deer just aren't going in front of the camera. I only run a few cameras, though, so I could see where it may get abused by people with a lot of them.
FWIW, we haven't had any pictures of almost all of the biggest deer we've ever shot. Of the ones we have had pictures of, the I would only say the pictures helped us on a couple of them..and we probably would've gotten them anyway because we got them in spots we know to be good.
Cellular cameras, on the other hand, I feel provide too much of an opportunity for mis-use, and I'd be in favor of banning them.
Whatever the decision is, I think it should apply both to public and private land.