This Stern "ghosting is normal" BS reminds me of 15 years ago when LCD display manufacturers tried to pull the same crap, claiming that a deal/stuck pixel or two was "normal" and "within acceptable tolerances" and they would not accept warranty claims on displays with less than [I believe it was some insane number around] 7 dead pixels.
As you can imagine, this was to get their production numbers up because the companies that enforced this policy (I recall Dell being one that did) had shoddy ODM partners who made mediocre displays that were prone to dead/stuck pixels. Rather than rejecting displays with dead pixels, they told customers this was "normal" and....
....well this pissed off a LOT of people, and it was only a matter of time before Samsung, Viewsonic, Apple, and others began boasting of their no tolerance policies where even 1 dead/stuck pixel would be eligible for a replacement display. Today Samsung/Innolux/LG make virtually every LCD display that exists and their manufacturing is such that dead/stuck pixels are far more rare than they used to be. But if people never stood up and told these guys dead pixels were not normal, who knows if that would have ever changed.
Now we're seeing the same thing with Stern leading the charge that their playfield manufacturing defects are normal variances as if it were a pair of designer jeans.
Make no mistake ....ghosting inserts right out of the gate are due to a less than proper clear coating process....either due to rushing the curing process, cutting corners in surface prep, or using substandard paints and/or clear.
If you are a Stern buyer, make your voice heard. Not on here. Speak up on Stern's social media. Tweet them. Tell your disty. Call them. The only way they'll change is if they see and hear a lot of buyer backlash. Stern cares about profit above all else, so that's the language you have to speak to them.