Let's do this in order
1. Why don't we get them on camera or gamecam? They intentionally avoid them so as not to be detected. Their intent (thought process) is to remain anonymous. If all they were doing was remaining hidden from us then clumsily walking in front of some meaningless contraption, they'd be stupid non-thinking animals.
2. Why don't they kill us? Their key objective is to remain anonymous, unbothered and separate from our people. Killing us would attract attention to themselves and unwanted hassles from hunters.
3. Why don't they kill each other or even war? Chimpanzees war don't they? They apparently have greater capacity for thinking rationally than us.
All that said, I am wondering who the more intelligent primate might be. I couldn't walk around the forests and avoid all these contraptions catching me in their line of sight for as long as they have. Our kind is constantly killing each other. Our kind is constantly warring. So what's the difference between us and them?
THINGS We covet them and they don't. They don't have houses or possessions that we can find.
FREE WILL Apparently they respect it and we don't
SIXTH SENSE OF SOME SORT They apparently have it or some other physical abilities to maneuver all those bigfoot commandos and their gadgets and I doubt we'd fair the same. Maybe they see IR etc
CENTRALIZED GROUP CONTROLS They are a fragmented society (we guess) that apparently operates under some type of intelligent cultural system (peace being first and foremost) that they must have passed down generation to generation. They don't have a centralized group of their kind hoarding the THINGS that drive the society and dictating what the others will do or controlling the masses (as far as we know). And best of all for them, they live off the land and don't pay taxes. How they do it without being detected, defies all logic.
Some speculation up there but I went with it anyway for conversation's sake. Peace.