My article has one very specific topic, designing web graphics in Photoshop. I said it clearly at the start of it. I never said it's what you "should" design in. It's just a fact that some people do design in it and I wanted to talk about it. Yes you can argue that you should use another app (and I'd agree), but that's off topic, as is talking designing apps. While you might think it's common sense to design @1x, my whole article focuses on why I think you should design @2x. I'm beginning to think people just read the title and insert their own opinion without reading what I said.