On KDE Linux with the sysupdate backend, updates are always applied on reboot. This setting therefore does not need to be shown when that backend is enabled.
A possibly relevant merge request was started @ https://invent.kde.org/plasma/discover/-/merge_requests/1148
Git commit 1a527660dd6a127711ba53d685a78448940c2593 by Aleix Pol. Committed on 14/09/2025 at 17:23. Pushed by apol into branch 'master'. kcm/updates: don't ask when to apply the updates on KDE Linux Much like in Kinoite, KDE Linux's updates always happen upon reboot. Do not add an inactionable option. M +6 -0 kcm/CMakeLists.txt M +1 -1 kcm/ui/main.qml M +2 -2 kcm/updates.cpp M +5 -5 kcm/updates.h https://invent.kde.org/plasma/discover/-/commit/1a527660dd6a127711ba53d685a78448940c2593