quarterly 2024Q3 amd64 / 13.3 missing all vital packages for desktop

A simple pkg upgrade of the desktop and the result is an unusable system 
without all important components.
What's wrong with package repositories?
I intentionally use quarterly to avoid frequent breakage seen in the 
latest. Now I've run the pkg upgrade on KDE5 Plasma desktop (on 13.3 
amd64) and the result is that the pkg upgrade uninstalled all my 
important stuff like Firefox, Thunderbird, Ardour, Gimp, Telegram, 
Audacity, Audacious, Pidgin etc. In short, everything I use on a daily 
basis. Finally, pkg autoremove offers me to delete 520 more packages!
Isn't the quarterly branch supposed to be the stable one, for users who 
don't need the hottest new stuff, but mainly want to avoid similar 
breakages?

pkg: No packages available to install matching 'ImageMagick7' have been 
found in the repositories
pkg: No packages available to install matching 'ardour' have been found 
in the repositories
pkg: No packages available to install matching 'audacious-plugins' have 
been found in the repositories
pkg: No packages available to install matching 'audacity' have been 
found in the repositories
pkg: No packages available to install matching 'dolphin-plugins' have 
been found in the repositories
pkg: No packages available to install matching 'falkon' have been found 
in the repositories
pkg: No packages available to install matching 'firefox' have been found 
in the repositories
pkg: No packages available to install matching 'gimp' have been found in 
the repositories
pkg: No packages available to install matching 'gimp-beautify-plugin' 
have been found in the repositories
pkg: No packages available to install matching 'gimp-lensfun-plugin' 
have been found in the repositories
pkg: No packages available to install matching 'gimp-lqr-plugin' have 
been found in the repositories
pkg: No packages available to install matching 'gimp-refocus-plugin' 
have been found in the repositories
pkg: No packages available to install matching 'kde5' have been found in 
the repositories
pkg: No packages available to install matching 'pidgin' have been found 
in the repositories
pkg: No packages available to install matching 'pidgin-encryption' have 
been found in the repositories
pkg: No packages available to install matching 'pidgin-fetion' have been 
found in the repositories
pkg: No packages available to install matching 'pidgin-hotkeys' have 
been found in the repositories
pkg: No packages available to install matching 'pidgin-icyque' have been 
found in the repositories
pkg: No packages available to install matching 'pidgin-libnotify' have 
been found in the repositories
pkg: No packages available to install matching 'pidgin-manualsize' have 
been found in the repositories
pkg: No packages available to install matching 'pidgin-otr' have been 
found in the repositories
pkg: No packages available to install matching 'pidgin-skypeweb' have 
been found in the repositories
pkg: No packages available to install matching 'pidgin-window_merge' 
have been found in the repositories
pkg: No packages available to install matching 'purple-googlechat' have 
been found in the repositories
pkg: No packages available to install matching 'purple-hangouts' have 
been found in the repositories
pkg: No packages available to install matching 'remmina-lite' have been 
found in the repositories
pkg: No packages available to install matching 'smplayer' have been 
found in the repositories
pkg: No packages available to install matching 'telegram-desktop' have 
been found in the repositories
pkg: No packages available to install matching 'thunderbird' have been 
found in the repositories
pkg: No packages available to install matching 'vlc' have been found in 
the repositories
pkg: No packages available to install matching 'wireshark' have been 
found in the repositories
pkg: No packages available to install matching 'xsane' have been found 
in the repositories

Given that the quarterly is in the middle of its lifetime, it cannot be 
some transient breakage after branch creation. Are the quarterly 
branches / packages abandoned?

Kind regards
Miroslav Lachman