Take a gander at this double-page spread (which I am too incompetent to present properly...) from DC Sampler #1 (1983):
DC has altered their timeline so that now, no heroes fought in WWII. There are no legacy heroes. For some reason, that would be distracting or confusing. Nope, no heroes until 5
And even the ones they've "revived" for Earth-2 are in another dimension, and are even younger than Earth-Prime's heroes, and a few of them they've even made villains, because that's cooler or something. These guys even let their homeworld be blown up, so, hardly the Justice Society there.
Meanwhile, there's Marvel:
Marvel also had a buncha characters who battled in WWII. But you know what?
Yeah, it defies all sense of probability and logic that pretty much all of the Invaders would still be alive today. But really, isn't it better that way?
Modernization without denying/eliminating the past?? Someone please tell DC that's still possible.
I'm not sure exactly when DC became ashamed of their past. Or when they decided that the public would hate and fear their heroes, so they couldn't have them do anything that might make make them popular, like, oh, I dunno, punching Hitler in the jaw?!?
Man, whoever thought that Marvel would become better at legacy heroes than DC?