They literally give you step by step instructions and what order to do them in. It just requires knowing how you want to do them, and doesn’t hold your hand to make those decisions. There have been plenty of people relatively new to Linux that have successfully installed Arch, and this is before the automated installer. It’s not that difficult. You just need to know what partitioning means, know that it’s different from formatting, and knowing how to partition correctly, including making partitions for your bootloader. Then adding those partitions to fstab. et cetera. And if you’re not familiar with those you can literally click through the links from the installation guide to each one of those to get there.

If you don’t understand these sorts of things it’s going to take you more than 30 minutes, because a Linux system has quite a few moving parts. Just because you use the terminal doesn’t mean you know Linux systems and how they work. Filesystems, partitioning, know how those partitions are mounted, /etc/fstab, how to configure a boot loader, systemd services, et cetera. But again you can learn all those things through the links throughout the installation guide.

Can I ask what was difficult to understand for you? Maybe I can help clarify some things.