The argument I've heard against this is, "but it's simple, it's only like 10 commands to set these up". The problem is, it takes like an hour to read through the entire wiki page (and you need to read it all in case there's an important detail that may screw your system over). It may be simple, but it's still massively tedious.
Maybe if you're a full-time sysadmin you're familiar enough with ifconfig, fstab etc. to do it without instructions, but I'm fairly sure that's a very low percentage of linux users. Even if you do learn how to use them, for most people it's useless information until you reinstall.
I consider myself quite the power user, and Arch is appealing to me (and I've tried installing it a couple of times when the temptation is there), but until it can have a working system out of the box, I think I'll stick to Debian.