A first look at the Samsung app makes me think it uses Miracast.
When you use Gnome and Wi-Fi is able to do P2P-Wifi (Wifi-Direct), then you can use the Tablet as second screen. Obviously, this will not work in a virtual machine, but it is the same thing as Windows use here.
It is this: GNOME / gnome-network-displays · GitLab
pamac build gnome-network-displays
But note: it is still experimental at the moment.
Deskreen or VirtScreen use VNC as backend. So it creates a Virtual Monitor on Intel GPUs and on the Tablet it will start a VNC-Viewer. Therefore, stream Virtual Monitor to the VNC Viewer on the Tablet. Obviously, this will not work in a Virtual Machine because it needs a Virtual Monitor, which the Virtual GPU provided by the Virtual Machine is not capable of.
So at the end, to use that feature, you have to install Manjaro, since there is no way to test this in a Virtual Machine. 