Valve deserves a ton of credit for making Linux gaming not just viable, but actually good. SteamOS was a huge part of that; Valve spent a ton of time proving that a Linux-based gaming OS could be polished, approachable, and provide a genuinely good experience. The Steam Deck was the perfect canvas to showcase it, and despite being a handheld first, the desktop mode meant that you could use it as a desktop computer if need be.