You should probably start realizing that displays have higher pixel densities than ever before.
More and more devices will be providing high resolution displays. Designing for low-resolution displays is designing for last generation devices and has little future.
Of course, designers should aim for a solution that is as device-agnostic as possible. The linked article provides designers with a number of alternative ways to support high resolution displays. Perhaps their use of Apple marketing speak ("Retina") is self-limiting, but to dismiss the article out-of-hand for using that term is no better.
More and more devices will be providing high resolution displays. Designing for low-resolution displays is designing for last generation devices and has little future.
Of course, designers should aim for a solution that is as device-agnostic as possible. The linked article provides designers with a number of alternative ways to support high resolution displays. Perhaps their use of Apple marketing speak ("Retina") is self-limiting, but to dismiss the article out-of-hand for using that term is no better.