Intel GPUs D3D drivers have historically been better than their OpenGL ones (which isn't saying much since their D3D drivers are also trash), but now we're talking driver quality of one player which has nothing to do with the API itself or opengl somehow being outdated on windows.
But ANGLE also targets desktop OpenGL (and vulkan), and as OpenGL 4.3 adoption increases I'd expect increasingly more browsers to use it for WebGL 2.0 since you don't need translation there at all. OpenGL 4.3 provides full compatibility with OpenGL ES 3.0.
You seem to be pretty confused on how OpenGL versions line up with the D3D ones, too. For reference OpenGL 3.1 is roughly equivalent to D3D 10.1. When you're complaining about only getting GL 3.1, you're also complaining about being stuck with D3D 10.1
Technically that’s probably true. However, if you drop support of Intel GPUs, your GL4+ software will no longer run on a huge count of older Windows laptops people are still using. For many kinds of software this is a bad tradeoff. That’s exactly why all modern browsers implement WebGL on top of Direct3D, and overwhelming majority of multi-platform games and 3D apps use D3D when running on Windows.
> VMware is a virtual machine, not hardware; it should be expected to be terrible.
It’s only terrible for OpenGL. The virtual GPU driver uses host GPU to render stuff, and it runs D3D11-based software just fine. I don’t use it for gaming but it’s nice to be able to use a VM to reproduce and fix bugs in my software caused by outdated OS, windows localizations, and other environmental factors.