.
Arch is also not more lightweight than other distributions.
With Arch, unlike other distributions, there are no extra dev packages. Thus, everything is present in a single package, so they require more storage space.
Arch’s packages also have fixed dependencies on other packages, which in turn have other dependencies. So you can’t only install what you actually want, which is often claimed. For example, I would like to uninstall various Bluetooth packages, but I can’t because they are dependencies for packages I use.
The basic installation including base-devel requires more than 1 GB of storage space without the GUI. Some distributions need less including the GUI.