You're returning the phone because of a bunch of small dots that don't affect performance of the phone at all? Yeah it sounds like you didn't want the thing in the first place.
Some people want to get their device in pristine condition when they buy it, it's not a crazy idea for a person to want a new purchase to be blemish free. It has nothing to do with performance. And not everyone wants to use a case. Some people want a new device with no blemishes and will except damaging it themselves, because that's where the damage (if any should occur to it) should come from.