For operators already using Testing/Trixie/Debian 13 this will lead to dependency version conflicts and/or loss of existing service; for upgrades from Stable/Bookworm/Debian 12 likewise.
systemd-resolved package depends on the exact same version of other systemd packages. When they try to upgrade to newer versions the installed-but-orphaned systemd-resolved package will prevent it unless it is removed.
New installs can use resolvconf.
[0] https://tracker.debian.org/news/1632477/accepted-systemd-2574-4-source-into-unstable/
[1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1098914
Man, I love and use Debian, but the thing I hate the most about it are these ancient email-based bug-reporting systems and package trackers, like the ones linked in your message. This shit is ancient, and horrible. Some time ago I reported a Debian bug using a HOWTO (what other distro requires a HOWTO in order to report a bug?) and absolutely lost track of it after my report was submitted: I could just never find my report again. I just gave up reporting Debian bugs. These ancient systems are definitely barring me from making contributions to the Debian project.
And bluca chose to fuck his users by breaking there shit on purpose.
Very nice, very systemd-ish :/