Yes, I got to that, and gave up. Anyone who can write that seriously is clearly at best a beginner skill level in both Photoshop and modern CSS. Anyone who can advocate a waterfall model is, as you say, severely out of date in their understanding of effective development processes (or building the software for very specific types of project where it actually works, but real web development projects are unlikely to ever be among them). And in particular, anyone who advocates mocking everything up in detail in Photoshop before writing any HTML/CSS if you need to produce fluid/responsive designs is simply having a laugh.