It's pretty unlikely at this point, but it works well on Steam deck so maybe it can be played with Proton on other Linux distro's. I haven't tested it though.
It may be that creating a Linux build is non-complex. The real problem is all of the other work involved in management, deployment, and support of the build. The same goes for Mac. Adding all of the dimensions to getting new builds out there and fully supported, it's just a bit too much to tackle for our tiny team.
That being said, I was a full-time Linux user myself in a past life, so I'll always consider Mac and Linux builds in any project. Hopefully I can make it happen on the next one.