I think calling it "a page worth" is understating it somewhat, especially if you want a full install to actually use stuff. In reality, when installing at first, you'll be finding stuff you missed for a while, like hardware video decoding.

Also, are you referring to just the direct instructions for one choice? Because to me, the point of installing manually is educating yourself on the choices, choosing one that suits you, and understanding what you're doing to set it up. Of course, when you're doing subsequent installs, you already know that stuff - but at that point you might just want to write an install script instead of running them manually.