
I have prick eared dogs and can see the tats on some photos, but in real life we don't notice such details.
It's the same as when you look around a room and think it looks tidy, you take a photo and you notice there is a shoe under the sofa etc, your brain is selective in what it takes in. Same as when we listen we don't take equal notice of every sound, but only that which is relevant.
I have only ever had one judge notice my exhibits clear ear tattoo, they were Scandinavian, and I know they use ear tats in that country, so he may have wondered if she was imported, as he gave it a curious look.
So this breeder then doesn't health test? pretty poor reasons for not doing the, except of course they will save a lot of money by not doing them :(