I think to a certain point, cams can give you an advantage when hunting in the right scenario...
Last year while scouting for my dads LE hunt, I put a cam on a wallow that always has bigger bulls on it during the summer, but never really a very good cow or spike area until later in the fall. On day 4 of the archery hunt, I decided to go into this area and check the cam to see what bulls were still in there. I usually don’t take my bow when I check this area, but decided to “just in case”. All summer long I hadn’t got pics of a single cow or spike in there. When I got there around 4:30 pm, and checked my pics, I’d noticed that the last 3 night’s prior, a spike had showed up at the same time, 5:15ish, to hit the salt and water. So I jumped in the stand just to see what happened. Sure enough, 5:15 I saw him walk down the trail and right into the water. I wouldn’t have ever killed that spike if it wasn’t for a camera to tell on him...
So they can give an advantage, but not to the point where hundreds or thousands of animals are dying, only because of them