What are you talking about? Are you saying that https://doc.qt.io/qt-6/qsgmaterialshader.html is less "castrated" than WGSL ? Doesn't look like it. I don't even see the spec, it only says "Vulkan-style GLSL"
>Here is a little secret
Google and Apple definitely have more resources to spend standardizing WGSL (WebGPU has a Conformance Test Suite) than whoever owns QT this time of the year.