In socialism with supposed democracy, where the state owns the means of production and supposedly the workers supposedly have a say about everything, they actually end up with a say about nothing (at least not without greasing the right palms in the inevitably corrupt system that arises).
In Social Democracy, capitalism is the underlying system, where corporations and workers can own means of production, but it operates under sufficient regulation that the excesses and systemic failures of captialism (e.g., failure to prevent Tragedies Of The Commons, tendency towards monopoly and excess concentration of power, consistent tendency to abuse and impoverish workers, etc.), you end up with successful systems like Northern Europe.
The two are very different, and we need to hold the DSA people to the latter and not let them sneak in the former.