They are less multiplatform than you would like, though. MacOS is stuck on an old version of OpenGL with no chance of updating since they deprecated it, and it

They are less multiplatform than you would like, though. MacOS is stuck on an old version of OpenGL with no chance of updating since they deprecated it, and it has no Vulkan support (ignoring translation layers like the one Rocket League used, of course). On Windows, Vulkan is a second-class citizen that isn't always available. And beyond that, there's the age-old problem of driver quality- for a given platform, using the native API tends to hit fewer bugs, perform better, and support more features. This has been true for years with Direct3D vs OpenGL on Windows, for example- browsers on Windows all wrap Direct3D to implement WebGL.