I have dozens (maybe 30?) hours worth of videos from the last year alone. There is no pattern to any of the activity what so ever. An animal might visit a couple days in a row or go on a week/month long hiatus. All a trailcam can confirm that an animal was in the area. It's not like it will show up every day at 9am and 6pm, approaching from one direction and leaving in another. Hunting the areas around my cameras, I haven't ever seen an animal that was on said cam, but I have seen plenty of other animals that were not on the cam. Game density can be more easily determined by going for a short walk, looking at tracks/poop/rubs/etc and glassing. Patterns and strategic plans? Good luck with that. If I had to choose between a trailcam and a headlamp for gear, I'd sure as heck take the headlamp as it is much more useful. It can get me into my spot before first light.
Trailcams are fairly useless for hunting, but very cool because they offer unique wildlife viewing/filming opportunities whether it's making a time-lapse video of a fawn growing up, a cougar coming in and sniffing where a doe was laying or a compilation of bears playing around with the cameras. It's a year round hobby that many enjoy. Legal and fun, don't like it, too bad.
Advantage? It is possible but slight compared to flashlights, gor-tex, range finder, binos, etc. Not every animal in an area is going to visit the trailcam. 99.5% probably won't at all. You will generally see more animals in 1 day of glassing than 30 days of trailcam footage so anyone thinking cams give an unfair advantage better give up the binos.
Orwellian? Well if anyone really thinks that, my advice to them is that the New World Order is after us, slowly taking over the woods with trailcams. Yet somehow I have managed to hike well over 300km in the last two seasons, crossing paths with a whopping total of 1 camera. I sure hope they aren't reading our thoughts right now or this thread will go into the memory hole. The world must be a very scary place for those people. If anyone wants to stay home and hide because they think the bush is infested with cameras behind every stump and tree, that's ok too