The Academy Awards, certainly, were created really to help promote movies. Rewarding perceived accomplishment is a useful way to do it. Most presenters are people with upcoming films, etc.
I'm sure the Grammys are the same. So if you win one and don't promote, then really you are failing the Academy. ;-)
Of course, Harry Smith won one for lifetime achievement for the Anthology of American Folk Music and died soon thereafter, so occasinally some good things happen.
So you're saying it's a good thing Harry Smith is dead?