Not abandoned or a horror story however it’s limited for other platforms. There is no way to control the the Media Dock and it doesn’t function correctly.
Things like the volume control sort of work but displays bad values as the media dock for the keyboard depends on the software to update the display properly etc. other pages on the dial understandably don’t work either for the same reason.
For the RGB side of things on the keyboard itself there seems to be some success from what I can tell going off what I’ve seen on openRGB’s site.
I’ve been looking for solutions for the dock but came up with little to nothing. Bit of a shame really as I actually like the hardware.
It would be a… MOUNTAIN of a challenge to get the media dock working on Linux if it had to be reverse engineered. (Ok, I’ll see myself out 
)
I’m rooting for you guys and OpenPleb!