I think the list is a little elitist, but as someone who is or has been guilty of almost all the listed crimes (in thought if not in action), I guess the author would not give a hoot what I think of it.
No toilet rugs is a great rule for people who don't spend excessive amounts of time there. For me, though I don't currently have one in my home, I have thought about it. With my stomach issues, I can spend quite a while in there, and you do want a nice even surface to rest your feet on. Of course, it helps that my guy has good aim
Ironically, I have the suggested arrangement of a regular rectangular rug, but given the layout of my bathroom, it's not possible to center the rug, thus my complaints about unevenness.
There are a couple good suggestions, like not pushing all your furniture to the wall and cutting back on ridiculous piles of accent pillows. But there were other complaints where I actually liked the so-called problem image, like the too many patterns one. Not that I purposely mix patterns that way, but I recognize it as a style that appeals to many and accept it as not outside the realm of acceptable (anyone ever step foot in a Chico's?)