What about people like Jean Harlow (dead at 26), or Marilyn (dead at 36) or the entire 27 club?
Hell what about Cyndi Lauper--who had one huge era--and flopped endlessly after?
All these people had short lives/careers and are remembered as legends for their contributions.
Gaga is only 30 and has made such a huge mark on the world.
She is going to be remembered.
Some people from Club 27 made mega acclaimed music, which made them legendary. Not all of them are legends either, not even most of them. Only some of them.
Cyndi is nowhere close to being a legend lol.
Her outfits? Kelly Osbourne wore pretty crazy outfits too during her time.
Her music? pa pa pa poker face pa pa poker face, it just don't cut it
Her influence? this was very short-lived like her peak