Would be cool to have more people on Linux finding and fixing these little details.

Unlikely to happen. This is very complicated low level stuff that’s often completely undocumented. Often the hardware is buggy but it works with Windows/Mac because that’s what it’s been tested with, so you’re not even implementing a spec, you’re implementing Windows’ implementation.

Also the few people that have the knowledge to do this a) don’t want to spend a ton of money buying every model of monitor or whatever for testing, and b) don’t want to spend all their time doing boring difficult debugging.

I actually speak from experience here. I wrote a semi-popular FOSS program for a type of peripheral. Actually it only supports devices from a single company, but… I have one now. It cost about £200. The other models are more expensive and I’m not going to spend like £3k buying all the other models so I can test it properly. The protocol is reverse engineered too so… yeah I’ll probably break it for other people, sorry.

This sort of thing really only works commercially IMO. It’s too expensive, boring and time consuming for the scratch-an-itch developers.