Linux Gaming

They are likely referring to the fact that outside of desktop it's basically on every device you interact with. Whether it's credit card readers random ass embedded devices or basically every web server you've ever visited. And more often than not the server hosting multiplayer games such as fortnight are also entirely Linux.

It's been long known timmy hates Linux there's no actual technical reason for it to not work. In fact, back when it was a single player only game it worked perfectly fine and that's from the early days of dzvk when tons of stuff was broken ¯\_(ツ)_/¯ it's entirely the refusal to enable the anti cheat support