If you can't understand that command before pasting it in your terminal, then you probably shouldn't be editing the Arch Linux wiki.

My issue with this style of verification is more that it normalises running commands right in the terminal. Commands that come from place you kind of trust. And poof at some point it will contain some nefarious code. Instead of using a package manager (the curl to bash variant) or running these commands in a container/vm.

They have a similar command for the Arch Linux forum, where beginners are encouraged to ask questions