Of course it's not right, legal or moral, but really.....leaving a trailcam in the woods is like leaving hundred dollar bills stapled to a tree. OF COURSE someone's going to take it! That's sadly the world we live in today. If you can't afford to lose it then don't leave it. It's that simple, because the more time it's left in the woods it's not a matter of IF it will be stolen or damaged but WHEN.
I learned that lesson with treestands years ago when I hunted from them. I started making my own hang on's because it was cheaper, and while I didn't like it when one was stolen I just chalked it up as a "cost of doing business" for my hunting.
Today, whatever goes in the woods with me comes out with me except for my footprints.