Manjaro is a decent-ish "beginner-friendly Arch". I mean the fact that they have their own separate repo and hold packages does confuse users who think they're

Manjaro is a decent-ish "beginner-friendly Arch". I mean the fact that they have their own separate repo and hold packages does confuse users who think they're running Arch, and I recall having an issue with AUR builds sometimes failing because the kernel name contained MANJARO where the build script expected ARCH, and their SSL issues are amateurish, but it's overall an alright "beginner-friendly Arch" which works out of the box. But hopefully these projects aren't beginners; hopefully they have people who would have no problem putting together a sane Arch system that's as usable as the one Manjaro provides. So even if you want to use Arch Linux on these sorts of embedded Linux systems, why wouldn't you just put together your own Arch system? What benefit does Manjaro provide there?