meven added a comment.
So next step would be to shadow user_manager ?
A naive ripgrep gave :
$ rg user_manager ..
../kxmlgui/src/kbugreport.cpp
352: m_process->start(QStringLiteral("kcmshell5"), QStringList() <<
QStringLiteral("user_manager"));
../systemsettings/sidebar/SidebarMode.cpp
130: item->setData(QUrl(QStringLiteral("kcm:user_manager.desktop")),
ResultModel::ResourceRole);
../plasma-desktop/applets/kickoff/package/contents/ui/Header.qml
128: KCMShell.open("user_manager")
130: visible: KCMShell.authorize("user_manager.desktop").length > 0
REPOSITORY
R119 Plasma Desktop
BRANCH
arcpatch-D28154_1
REVISION DETAIL
https://phabricator.kde.org/D28154
To: cblack, #plasma, #vdg, ngraham
Cc: ltoscano, mart, yurchor, iasensio, meven, crossi, The-Feren-OS-Dev,
davidedmundson, broulik, filipf, ngraham, nicolasfella, zzag, plasma-devel,
Orage, LeGast00n, cblack, jraleigh, zachus, fbampaloukas, ragreen, ZrenBot,
himcesjf, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol,
ahiemstra