Cult of personality? Are we living on the same planet? As far as I know people talk about him a couple of time a year. No statue, no memorial.
Yeah people erase his flaws a bit, yes it's a bit annoying, but he actually tried to do something positive in his life instead of trying to get rich at any costs like that "genius" of Zuckerberg (genius for what?).
So people remember him, I doubt most people will care when Zuckerberg will die, he just didn't do anything to deserve it, your money doesn't make you a good person.