I don't believe that the tutorial deals with "minute details" that will only be noticed by 10% of the people. But I'll go along with your point. I think you're

I don't believe that the tutorial deals with "minute details" that will only be noticed by 10% of the people. But I'll go along with your point. I think you're coming at this from the wrong point of view. Of course, the other 90% (i.e. what the site actually does, its content, etc.) are more important. But the goal of this tutorial was teaching what I know, i.e. design, and specifically the visual part of web design (i.e. I didn't talk about branding, interaction design, etc.). So that's what I wrote about.