This article is ridiculous. The author essentially suggests that we pander to his demographic (see footnote 1, "Windows-using web designers, if such people still exist") for a non-existent reason, namely, that "you may not realize quite how bad it looks when any graphical assets show at 1X.". This is the type of irresponsible FUD that I would not expect to find here. Show me a website that looks worse on a Retina display, and I'll show you a crappy rendering system.