Disco Elysium is more absurd than political, kind of like Kafka...did I just call something Kafkaesque?
A point based system has it's merits, if the system from Pillars of Eternity was built upon you might get something really interesting, but I'm not sure it would work as well for alignment or personal philosophy, basically the same way it can get weird in Disco. If the way Disco Elysium deals with identity and politics as seriously as D&D treated alignment where on the chart does the fascist/communist/neo-liberal suicide cop go?
Actions that effect alignment shouldn't be additive they should be absolute. And if your characters actions are inconsistent to their motivations that just becomes a way you fail to live up to your own personal ethic.
I'm off to internet prison now.