Currently there are plenty of VRChat related components in the SDK which don't have a proper category/path when adding a new Component. Due to this it can be a bit hard to locate and figure out what you're looking for, especially when you're new to the VRCSDK.
By adding the AddComponentMenu attribute to the aforementioned classes and categorizing them properly, the overall beginner experience can be more friendly. I'd generally consider this a quality of life feature.