I wouldn't argue against that. Disney is a huge machine that churns out new characters for movies, but there's no name attached to those characters. And those characters often never live beyond the movies.
Stan Lee was a man attached to so many inspirational superheroes. When the characters were an inspiration, the man behind them will undoubtedly be one as well. And his characters have lived on for decades in comics, cartoons, movies, video games, and action figures. We'll remember him through his characters long after his passing.