Foundry is a virtual tabletop I use for my DnD game I've been DMing for my group for the last four years. It's only on windows right now because I also use it for streaming games from my gaming rig, and the Linux drivers for the Xbox controller Bluetooth option weren't up to par. I've since gotten a Xbox wireless dongle which is supposed to work flawlessly. When I have more time I'll probably switch it back over to Linux.
I run a node.js version of foundry as a service from it though, and everyone just accesses it through their browser window. I'm 100% with you on preferring Linux. My deadline for getting it switched back over is probably when win10 goes EOL, because it is an old enough PC that it can't install win11 without the workarounds.