Nowadays it has an installer [Disclaimer: never used it]
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.
Rather than a sane default, the installation guide says "Install a bootloader. Click here for a list of 8 bootloaders" "Click here to see 12 different partition managers" etc..
I feel I have to be an expert in every part of the system (Even things I'll never, ever touch again). It would be much better if the install guide chose the default and said "here's a link for other options if you prefer". Once the system is set up, I mostly just run pacup every day, with very few issues. But the install process seems deliberately complicated, and serves as gatekeeping.
It may scare people away, but you have to ask yourself: what kind of people? I have been teaching Linux to a couple of people, and some hate reading documentation in general. Make of that what you will. :)
That said, I installed Linux on a Windows user's laptop and she was fine with it because all she needed was a browser and something else I cannot remember. I think this covers many people.