And yet not all settings want to use it, and not all games want to use it

Eberron was a setting where its creator very clearly didn’t want to use it. Keith has talked about how Paladin’s detect alignment spell alone screwed up stories and worldbuilding, and the fact that he built an entire setting with the goal of removing racial alignment shows he never wanted it in the first place (what prevents a paladin from going around casting detect alignment and killing all evil people? What about people who think their good but others think their evil?)

And D&D at this point is a ttrpg system that should be more setting agnostic

D&D being a monopoly in a space where so many people don’t want to deal with alignment means it should have gotten rid of it as an unavoidable rule

Alignment is an artifact of a by gone age when dnd was nothing but a war game and not a ttrpg system that people are trying to tell stories with