I've installed Archlinux ARM on RPI4 before and it too many steps for me as much as I need to do it for testing. I recently became aware of EndeavourOS ARM that has a simple process to install Archlinux ARM. You can do a headless or Desktop Environment. In the end you still have Archlinux ARM, but without the install headaches.
This might be a solution for those who want Archlinux on their RPI4, but can't get through the install process.
https://arm.endeavouros.com/