Gamers need the newest libraries and the newest drivers or their stuff might not run as well as it possibly could
No they don't. They think they do because they believe they run their precious expensive hardware only at 99% whereas they imagine, I bet due to trying to compete with each others on benchmarks, that with the absolute latest driver they can actually push their GPU at 99.99% and gain .1FPS in the most popular game they might not even like and 2 points in the trendy benchmark.
Source : I'm a gamer playing on Debian, from indie to AAA, from 2D to 3D to VR, and it just works. Sure I'm not at 99% perf on my hardware, I might even be at 80% but I'm definitely spending 0% time tinkering and 100% having fun.