WebGPU is kinda meh. It's when you need to do do something on browser that you can't with WebGL. GLES is the compatibility king and runs pretty much everywhere, if not natively then through a compatibility layer like ANGLE. I'm sad that WebGPU killed WebGL 3 which was supposed to add compute shaders. Maybe WebGPU would've been more interesting if it wasn't made to replace WebGL but instead be a non-compatibility API targetting modern rendering and actually supporting Spir-V.