DSA candidates are beholden to the demands of the working class, not the Democratic or Republican party nor capitalist donations.
A socialist entering a capitalist government does not make that government socialist. The government’s class function remains bourgeois, and the socialist is pressured to act as a bourgeois minister in order to get their (generally minor) reforms through.
Additionally, electing candidates to deliver material gains is only a single aspect of DSA. Along with mutual aid, labor organizing, and International solidarity campaigns to name a few
Not really related to the criticism I was making at all.