Even if it isn’t a question of reducing Socialisme ou Barbarie to their critique of the bureaucracy, their contribution on that point was important. My discussions with Debord confirmed it. He’d adopted a sympathetic but critical distance from Socialisme ou Barbarie. He kept it until the distance was complete. Socialisme ou Barbarie retained an anti-bureaucratic radicality without managing to accomplish anything else.
Raoul Vaneigem, Self-Portraits and Caricatures of the Situationist International

The SI had no reason to be opposed to Socialisme ou Barbarie. We agreed with their analysis of the bureaucratization of the workers’ movement. They lacked what we had: poetry, that is to say, self-management, which was the poetry of the proletariat rediscovering its everyday life, rediscovering the veritable substance of class struggle: the self-management of everyday life…
Raoul Vaneigem, Self-Portraits and Caricatures of the Situationist International