I'll be honest, being from Maine I know plenty of people with that mentality. Basically, people "from away" coming up, buying all the land, inflating the prices of land then posting it to create private little hunting preserves. People that have been hunting that open land for generations get pissed when that happens. Not saying damaging someone's property is right and I always avoid posted land even if it's stuff I've hunted for decades but it is frustrating. I had a spot I've hunted for 20 years, shot the biggest buck of my life a couple years ago there. It was sold off as one of 4 pieces of a huge chunk of woods about 3 months ago. Showed up on my first day hunting and it was all posted, 160 acres gone. Now even if the other 300 acres stays open access the deer will mostly head to that 160 acres once hunting season starts.
I understand, property rights, freedom, etc. etc. But people react emotionally when something that "was theirs" in their mind gets taken away by some "foreigner".