I could care less about my picture being taken on public ground in normal circumstances, the issue for me would be altercations of individuals who assume “ownership” of a spot and use it to keep tabs etc. and potentially do harm to my setups or myself. That’s a big reason I do not setup permanent stands on public, but not everyone has that luxury. There was a case in upper Michigan that this happened and a guy actually used a trail cam to keep tabs and eventually cut tree stand straps causing harm to a guy (falling from the stand) who was in “his” spot. I use trail cameras on public every now and again, they help me target certain animals if I desire to do so. I wouldn’t say they are vital to my hunting but banning them seems a little excessive to me. The comment above about “cleaning up the woods” and “leaving the woods better than you left it” shouldn’t only apply to physical items left in the woods, sometimes people should leave others stuff alone that isn't theirs.