Being that Arch is maintained with arch users in mind[0], building an installer for that user base would have to entail a wide range of option for unique use cases because that's whats expected of their users[1]. There isn't a "cop-out" or "plea" to users outside of the community because it was never a goal to appease them.
[0]https://wiki.archlinux.org/title/Arch_Linux#User_centrality
[1] https://wiki.archlinux.org/title/Arch_Linux#Versatility