Eddie Vedder and Pearl Jam music can not be described as "grunge". Anyone who refers to their music as such, is dead wrong! This beautiful music and lyrics is pure rock with a blues undertone. The word "grunge could be used to describe Nirvana and others who came on the scene in the early 90's. Pearl Jam is now celebrating their 20th anniversary. Grunge has been dead for over 15 years!
Only ignorance of the bands music is the reason it is refered to as grunge. Open your ears and educate yourselves about their music, and I am sure you will agree.