alt Hacker News> Officially supported native builds for both [macOS and Linux] would require significant financial contributions to be considered economical.
Running it through Wine is probably the safest bet. Should be no problem for platforms with D3D11 emulation figured out (eg. basically everwhere).
I'm running KSP on Proton, and it works just fine. If I were developing the game native builds on Linux would be pretty far down the priority list.