Remove Xarchiver package without removing whonix packages?

That page explains is generically for any package which is affected by this. xarchiver is part of a meta package (kicksecure-desktop-applications-xfce). Also not easy to uninstall other applications which such as xchat, keepassxc, vlc and others (dependency of whonix-workstation-packages-recommended-gui).

Please specifically see Debian Packages - Whonix and then follow all links.

Debian packages support only Recommends: or Depends:. There is nothing in the middle. The missing feature is:

Weak-Depends: list of packages that gets installed when using apt --no-install-recommends but any package listed there can be removed without removing the package which referenced the Weak-Depends:

The related forum discussion: