That is needed if those marks wasn't caused by op, op clearly didn't deny those marks so why would unboxing video be needed here.A simple uncut unboxing video by @rkkaranrk can resolve all this confusion.
@rkkaranrk since it's for your friend just ask if he can live with it, if not get the refund. Why stress over something that's not even for you.
To be fair it was misleading. When one sees the word pristine they expect the condition to be at least 9/10. The pictures you added makes it look like there are no scratches. The next time you want to highlight similar marks in a mobile use hard light sources to directly bounce off these marks and it'll be visible clearly like rkkaranrk's pictures. It's good that you offered refund, hope this gets resolved soon.never in my life will use the word Pristine again, even if its brand new, better to use simpler English words