Not for nothing, but my 2012 rMBP looks as good today as the day I got it and I don't use a screen protector. I'm quite paranoid in how I work the laptop, and try to install to my kids who now use the laptop, don't touch the display with your fingers
Funny, I've had the same laptop, 15" - 2012 (first model) rMBP, as well, a 2015 - 15" CTO, neither with this issue, neither has seen a 'guard' of any type, and they're both used daily... the '12 model is running (& looking) as well/good as the day I bought it. I don't tend to 'stuff' my computer bag but I'm careful when packing my gear up to separate the laptop and not put unnecessary stuff or items in the bag that can cause unnecessary pressure of the top of the display
As well as they're built, there's a lot of surface area on the lid which, with enough pressure, will certainly 'flex' allowing contact with the keyboard. That's been an issue since the laptop was introduced and few OEMs have managed to deliver an I unsusceptible display 'build'
I'm not overly anal about my gear but I always have a microfiber cloth on hand to clean my iPad, iPhone or display in my car --- a quick swipe of the laptop keyboard w/said cloth and the display before closing... especially if kept pen for a long period, is never a bad idea!
Has anyone else in the forum reported any issues like this before about the new MBP? I find it very hard to believe this is not due to something the user is doing, unless of course its a widespread issue.
I agree. We've seen two examples and the OP's being significantly different and more prominent. IMHO, his machine is a dud, something that can happen in mass production BUT not something rampant or even an issue for the vast majority of owners.
The 2012 models were losing the coating that's applied to the display and hence, lengthened the warranty to fix the display. I'm lucky as I didn't have the issue but a quick Google of the 2012 MacBook Pro display coating will (possibly) show a possibility of what happened with the OPs. Apple should replace it on site. If an Apple Store is nearby, I'd visit!