I should point out that the "scratches" in question are incredibly faint, and only truly visible when the display is off and bright sunlight is shining on it. Moreover, I put "scratches" in quotation marks because they mostly seem to go away after buffing with a microfibre cloth, so they're more like dirt scuffs than scratches.
All told, while this is somewhat symptomatic of an imperfect case/lid design, the fact of that matter is it has absolutely no bearing whatsoever on the function of this machine, as it is only visible under very specific lighting conditions and while the display is off...
Speaking as someone who can sometimes get really irritated over small imperfections, I can honestly say that this particular issue is very easy to ignore--unlike a creaky case or clicky trackpad. Just be mindful of not applying too much pressure on the centre of the lid when you pick it up/handle your machine, and if you're really paranoid cover the spacebar/upper trackpad area with a micro fibre cloth when you close the lid.