Yeah it bugs me when people refer to them currently as a "grunge" band. that kind of dismisses everything they did after their first album, and conjures up the image of a bunch of dudes in their 40s still sporting flannel and cargo shorts and long hair, with strained vocals and angst. *deep shudder*
I understand why though, to an extent.. they fit in with a particular sound and style when they first emerged, and we silly humans need to define everything and put it into tiny categories.. the problem is when you're trying to put a label on something as (ideally) creative, ever changing and evolving as music, you can't guarantee that it will continue to fit your definition, or ever fit in the first place.