I think the reason is that you needed to save on places where to look for files and sort by function in LFS. The package manager converts a package view into a

I think the reason is that you needed to save on places where to look for files and sort by function in LFS. The package manager converts a package view into a system view, it kind of "turns around file system layout by 90 degrees". Both views have their pros and cons. It is annoying however, that configuration is not standardized across distros.