The obvious effect of this -- to discourage people who oppose far-left purism from joining DSA and drive out current members with such views -- is a feature, not a bug. The anti-electoral factions of DSA care more about gaining power in the organization than stopping fascism.
NEW: DSA's National Political Committee passed two resolutions today aimed at Los Angeles mayoral candidate Nithya Raman, beginning processes that could result in DSA-LA being forced to rescind its endorsement of her this weekend and/or Raman herself being expelled from DSA by January.