If you mean this:
Unlike the
tarcommand line tool, which was originally designed to archive data in order to restore it back to the same system or to a replica thereof, theTarpackage is designed for using the TAR format to transfer trees of files and directories from one system to another.
it seems like missunderstanding of unix philosophy where (simplified ->) everything is file.
As I show that philosophy bring elegant solution how to interconnect processes and through pipes send data/tarball to destination machine where another processes would unpack, extract it without using additional space for tarball. I don’t think it is something which was not anticipated in time when tar utility was created! Pipe “files” between processes is very old (and very powerful) basic paradigm behind unix/posix ecosystem.