I'm on the fence on this one.
On one hand, if it's not really being cared for upstream, then you're
right in asking about whether demotion is appropriate.
On the other hand, it does Just Work, and I've been pointing
inexperienced admins to it for years as a console-sharing
leave-things-running solution for the command line. It's nice not to
have to explain screen/tmux operation when on defaults, and this
convenience only really works if it's installed by default.
Note that it's currently documented in the server guide
(https://ubuntu.com/server/docs/tools-byobu) and a deprecation (from
Ubuntu Server main/defaults) needs addressing there too.
Robie
