A phone shouldn't even be using Stainless Steel for anything, never mind one something painted or dipped, that's a whole other topic especially if they aren't like super baking it to avoid scratching. Those reports are 100% accurate about the phone just magically getting scratches, SS is an easy surface to penatrate, especially with a phone that gets used an enormous amount of time through out a day, month, year...Look at an old iPod...lol
Either way, I'm a fan of the 6s, 7, 8, no shinny scratchpad material. The X is going to be apples biggest replaced iPhone, you will have people who just don't know any better trying to return phones with Warrenties, Apple care, etc etc because their phones look extremely worn.
I will also tell you the reports of scratched screens is off the charts, like insane from what I'm reading and hearing. Try and go get a screen protector put on at Apple right now. They are sold out everywhere for glass screens because of the easily scratched glass. That's another $42 bucks to Apple? I'm cool with making money, but don't tell us you are using materials that are amongst the strongest available only to really just see a pretty phone that gets worn from just breathing on it. Just my take...