Have you seen a Vulkan "Hello Triangle" in comparison? That's a least a thousand lines of code, and that's with taking shortcuts :)
132 lines isn't really that much for a triangle in any 3D API, except 90's style OpenGL 1.x (which was a nice and convenient API, but also very inefficient).
I'm sure there will be plenty of high-level Javascript libraries built on top of WebGPU which will cater to different philosophies and use cases, and those will also allow a Hello Triangle with fewer lines of code (but also will involve compromises at flexibility or performance).
132 lines isn't really that much for a triangle in any 3D API, except 90's style OpenGL 1.x (which was a nice and convenient API, but also very inefficient).
I'm sure there will be plenty of high-level Javascript libraries built on top of WebGPU which will cater to different philosophies and use cases, and those will also allow a Hello Triangle with fewer lines of code (but also will involve compromises at flexibility or performance).