For a text editor it's definitely good enough if not extreme overkill.

Other then that the one big downside of WebGPU is the rigid binding model via baked BindGroup objects. This is both inflexible and slow when any sort of 'dynamism' is needed because you end up creating and destroying BindGroup objects in the hot path.

Vulkan's binding model will really only be fixed properly with the very new VK_EXT_descriptor_heap extension (https://docs.vulkan.org/features/latest/features/proposals/V...).