It's fantastic irony that my iPhone 4S gets this message on a page about not being elitist:
"If you want to ensure the best experience, please install a browser that was developed after 2009."
"If you want to ensure the best experience, please install a browser that was developed after 2009."
Maybe it's not blind elitism, maybe it's forethought elitism.
Also, this seems to be happening because of his breakpoint at width <= 1024px I believe. Confirmed this on both Chrome dev and Firefox Aurora.
"I know many would fault me for [not supporting IE] on TNL.net but the design decision of not supporting older internet explorer browsers was based on analytics data that showed me that only 5% of my overall audience was using those"
Remember, ignoring IE users is not necessarily about elitism, but can also be a financially sound decision.
It's also not a good idea to be condescending to your users. The tone of that message is anything but friendly. The "banned" message mentioned in another comment even less so.