Sorry about that – the point of the article definitely wasn't to exclude non-Retina users, it was just to document what I was encountering when I came to creating a favicon for the site.
As if "the retina age" were an actual thing. How many people have them now?
That was my submission, not the author's words.
You don't think screen resolutions will continue to increase? I give it a couple of years, maybe less, before the "retina" resolution is standard hardware.
I don't want to think what beastly GPU I will have to buy to run next crisis on native resolution on ~150 dpi 21" monitor.
That's most likely going to be a >200dpi screen, where you can simply use 2x upscaling for better performance (with no visual degradation compared to current monitors).