I have never heard them talk about wanting to overcome capitalism, not even through reform, and they don’t call themselves socialists. They don’t even call themselves social democrats but rather “left-conservatives”, whatever that is supposed to mean.
Youth org of Green Party Germany: The complete leadership council (10 people) quit job and party.
Link to the resignation letter (CW: reddit)
They say they have been in opposition to the party leadership/majority on various issues, like the 100 bn “special fund” for the Bundeswehr, that new brown coal mine, and when they took away the rights of asylum seekers.
Seems like they’re planning on creating a new radlib organization.