In cases where people simply have to follow instructions, I find the fear of the command line to be disappointing. It is far easier to provide support and that support is far less failure prone simply because you can state exactly what has to be done, rather than describe how to navigate a user interface while hoping that the other person interprets visual cues in the same way.
That being said, there is a deeper problem with the Arch installation process: the user needs to know exactly what they want. I can race through an Arch installation and end up with my desired configuration far faster than I could in any other operating system. Much of that has to do with the ability to dump a list of package names into pacstrap and copying over a bunch of configuration files. There is no fumbling around with a GUI. Yet those who are new to Arch (or, worse, new to Linux) don't have the benefit of that experience. The process is daunting.