One of LiMux client's requirements is for display configuration to be easily accessible.
Adding a "Display Configuration" context menu entry which is widely known by being present on another operating system aids in users finding those settings.
It also gets asked for occasionally by users on the internet.
Since this has been quite a controversial topic coming up every couple of years, the entry is off by default but can be enabled by the user if so desired or by system administrators using desktop scripting.