Hot take: packaging open source software is actual work (and is sometimes what we demurely call 'non-trivial' in this field). I say this as a sysadmin who has sometimes had to deal with the results of not packaging software and then not keeping up with the state of the software we didn't package but installed anyway.
(Sure, sometimes you get lucky and the packaging instructions are easy to write (Debian rules, RPM specfiles, whatever Arch uses, etc). And sometimes they aren't.)