Luckily for me I work exclusively with game development for PC and consoles. The console manufacturers have their own platform specific debugging tools, for PC there's Nvidia NSight and RenderDoc. Also, I mainly work with Unity these days and for many simpler tasks their own debugging and profiling tools are quite sufficient.
Unfortunely good debuging tools for 3D Web API isn't a priority even after 10 years, and same applies to WebGPU roadmap.