It does, however, still work quite well with the Windows version via Steam Play Proton on desktop Linux and is Steam Deck Verified against the Windows version in Proton. So while it’s a loss of support for their Native build, it’s still fully playable on Linux.
There are many Linux native games that I play through proton because they run better and with a more complete set of features.
Same, unfortunately. Out of the last 10 native games I’ve played, I probably ended up forcing Proton on 7 or 8 of them. I’ve seen a couple developers stop porting to Linux natively to instead “officially” support Proton, and I just can’t be mad about that because it’s less work for them and a better experience for us.