[restalis]

rsync does what was designed to do and the lack of scope creep is not a bad thing. There is "fpsync" - another tool on top of rsync (which was mentioned in one of the comments at article's page) that covers the parallel processing use-case: https://manpages.debian.org/bullseye/fpart/fpsync.1.en.html

[sneak]

rsync was designed to synchronize directories of files from one directory to another, optionally on another host, and to do so efficiently.

It doesn’t do that.

Even before this conversation, a few weeks ago I started working on a modern replacement.