Perhaps it's the sparse explanation from the github page? I dunno.
What I do know is; I have a Windows VM under libvirt/Kvm/Qemu and it's everything this thing claims to be - if I understood the broken English of it - I have passed through my RTX2070super GPU and I am basically running Windows+"apps" - including a few Windows games, and I'm using Looking-Glass to do it all, meaning I have full speed graphical access to Windows I need.
Can somebody please explain to me what this thing is and why it's any different or better than what I have now?