Because it's a laptop built in co-operation with the KDE Project. It's mean to give KDE developers a "showcase" laptop platform. From the original Slimbook 1 re

Because it's a laptop built in co-operation with the KDE Project. It's mean to give KDE developers a "showcase" laptop platform. From the original Slimbook 1 release: The KDE Slimbook allows KDE to offer our users a laptop which has been tested directly by KDE developers, on the exact same hardware and software configuration that the users get, and where any potential hardware-related issues have already been ironed out before a new version of our software is shipped to them. https://dot.kde.org/2017/01/26/kde-and-slimbook-release-laptop-kde-fans https://dot.kde.org/2017/01/26/kde-and-slimbook-release-lapt...