With a remark like that, I was hoping that the author provide the raw scores. Even so, on what grounds is Arch Linux not friendly? Their wiki is very easy to follow and understand for a new user. Not to mention their forum.
Also, risking my neck here, Archbang is a neat little distro that's pretty much arch + openbox with a few pieces of bloat. A dedicated arch user might ask "why?," but it is extremely easy to use and install (and it is arch). Just something to take a look at if you decided you're too lazy to look at the arch wiki and take 10 minutes to do the real install. Archbang is polished enough and more of a "complete" preassembled distro that I thought would have done a lot better.
Plus, who doesn't love to tinker.
That said I think the arch wiki is truly amazing. I never expected such great documentation from a linux distro. I learned a ton while installing it and I'm still learning constantly. It may be unfriendly in that you'll need to generally configure things yourself before you use them, but the documentation is incredibly friendly.
Maybe the article author meant "popular" or "well known"? But even then the Arch community is friendly and they've produced some nice documentation.