What I mean is: do Arch Linux developers use Arch Linux to develop Arch Linux? Do Ubuntu, Fedora, Debian, and others do the same? Or is it a case of “the cobbler’s children have no shoes”?
It seems obvious, but it may be more complicated than it appears.
Unfortunately I don’t have a source, but I remember reading that some Debian packagers prefer using Arch, because doing the packaging there was easier for some reason 😅