The rM2 also "just runs linux" under the hood. I bet you could write a utility to screenshare over USB if you really wanted to.
The display buffer is proprietary and requires DMA (and breaks with every software update), so while you technically can, it won't be easy.
That's a use case I hadn't considered - I've not worked in an office in over a decade.
To my knowledge there's no quick solution there. It sounds like maybe this just isn't the device for you.
The rM2 also "just runs linux" under the hood. I bet you could write a utility to screenshare over USB if you really wanted to.