Are you really and seriously complaining about those tiny scratches on the millimeter of shown plastic? Come on man. That isn't a defect, it is evidence of a foreign body scratching the plastic.
Common sense
Everyone has different opinions and standards.
To me this is clearly a defect.
I'm not complaining about these tiny scratches on my start button, but I am not happy by the fact that one of my component has problem like this in 53k MSRP vehicle.
I used to work as a interior quality engineer for Lexus.
Automotive OEMs aren't stupid, they would never paint something that is not visible and would do their best to paint "design surfaces" and minimal on the back side.
OEMs even have requirement on how much paint they allow on the back side closed to the edge to the "design surface"
The side of button is visible, so that is a design surface that consumers would see and got painted.
but now the paint on that design surface is rubbing off and my guess is it is either rubbing off against the ring around the start button or dust may get stuck and rubs off the paint.
This means it's either designed wrong as it should have enough gaps so that paint doesn't get scratched by rubbing off against the ring around it or by dust which may get stuck.
I also told you guys my company's 2014 Kia Soul and 2015 Hyundai Sonata's start button's don't have scrub marks like this.
If paint rubbing off from start button is really a normal/expected behavior while 2014 Soul and 2015 Sonata don't have these marks, the only conclusion I can make is that Stinger has start button that has less quality than those.
I don't think this is normal at all, just like our paint on door frames at homes wouldn't get rubbed off by door opening/closing.
But the paint on door frame will get rubbed off if it is installed wrong.
Like I said earlier, we all have different Opinion and whether this being defect or not is none of our decision to make.
I will see what my dealer says during next service.