"I can't help but wonder. If those drivers are so buggy, why isn't this a high priority to fix?" It will come. Raised concerns are not WebGL specific, WebGL is

"I can't help but wonder. If those drivers are so buggy, why isn't this a high priority to fix?" It will come. Raised concerns are not WebGL specific, WebGL is just exposing things about HW-accelerated 3d to more general public that have been here since always and every GPU 3d technology has to face (problems with drivers, fragmentation of market, very wide spread in capabilities). People will need to get used to update their drivers (the same as they already got used to update their OS and browsers). Gamers are already doing this since forever, not because of security concerns but for bugfixes / performance improvements. GPU vendors are actually pretty responsive, I'm aware of driver hotfixes released just to address problems discovered on releases of particular games (in between regular monthly driver updates).