Totally agree. I don’t understand why anyone thinks they have the right!
Keep watching and you’ll get there in the end. Maybe pick on one hog who looks a bit more distinctive first and have a really good look at the face, etc. then once you’re confident that you know that one, move onto another. I know I said it before, but drawing really does focus the eye on the hog and makes you look more closely at small differences – and remember them!
Maybe you need another camera – one for close and one for far! But you’re right, it’s nice to be able to watch their behaviour without them disappearing out of frame all the time. Just checked mine and it’s 7 – 8 feet away from the feeding area, which shows a fair bit of behaviour, but still close enough to see individual hogs fairly well.