Unless something major changed, you're dropped to a terminal as soon as you boot the install image, and have to either have advanced knowledge on what to do from there, or have the wiki side-by-side on another device. And unless you're taking incredible notes at the same time, good luck replicating the set-up if you need to reinstall.
Ubuntu, openSUSE, Fedora, and most other mainstream distros at least boot you into a GUI to install.
I once had my computer crash during a kernel update and this left the system unbootable. All you have to do is use the arch iso and arch-chroot into your system to rerun/undo the kernel update or whatever other update broke your system. The thing is, even a "reinstall" is merely about deleting packages and then rerunning pacman and reinstalling your bootloader. Your /home and /etc stay untouched. You can take the list of installed packages and then install those. I mostly needed that when moving from an old laptop to a new one.
I'd rather nuke from orbit and rebuild than duct-tape holes :p If my system became unbootable for some reason, I'd fix it and ideally find out what happened, backup stuff, and reinstall. Best-case, everything is fine (although I'd change distros if it ever broke because of a clearly untested updated). Worst-case, the system becomes unbootable again because of the same issue and I can report it upstream with more confidence.