A combination of infighting, socdem betrayal, ineffectual policies/proposals in government, BRD media villifying anything left of neoliberalism, and original Die Linke members being originally actual socialists from the DDR. Like basically every person in BRD sincerely believes DDR was a hellhole, so being an og DDR commie does not help you win any favours here. Plus the people of the DDR got neoliberalized and shock therapied, yet their post 1991 woes were blamed on the failures of the DDR and on “others” such as immigrants.

Chances of a proletarian movement in Germany today? Basically zero. If there is a movement which goes anywhere anytime soon it’s fascism. If you’re even moderately anti-capitalist or pro-worker you’re on a watchlist of some sort, and that’s just the beginning of the private-public partnership of oppression.