using a system package manager does not mean that one needs to use a distribution's (debian, ubuntu, redhat, gentoo, arch, etc) mirror to pull the package, it does mean that you use an OS provided tool to manage all software on your machine.
- It does mean that the common libraries are installed once
- conflicts between common libraries are more transparent
- System tools make sure that package stays up-to date
- It does mean that the common libraries are installed once - conflicts between common libraries are more transparent - System tools make sure that package stays up-to date