Plenty of OD&D concepts have fallen out of favor. Most of them died out because they put limitations on play. These days swords and sorcery systems are way less restrictive and f20 games are focused on customization. However, 5th edition D&D opted to keep alignment- which has some gamers scratching their heads.
In this episode James and his guest Ben Dutter go to bat for alignment in a world where it is falling out of favor.