The main difference is the DNC is mildly in favor of progressive reform, but not at the cost of their piece of the capitalist pie. They will happily take credit for anything grassroots organizers bring to the point that even the corporate donors will pretend to care. Remember that, for example, the DNC's support for marriage equality started with Biden's gaffe as VP. It was already so popular that it didn't matter whether they supported it or not, so the gaffe became platform when polls didn't shift against them.
I'll take that over the GOP wanting me, at best, crushed under a boot and subservient, but I'll still vote for just about any candidate the DSA puts up locally if they ever do. I recognize the barrier function of voting for whatever barely animate ghoul the DNC triangulates on in the primary, so I'll do that until someone figures out how to get > 50% at that level with someone I'll vote for rather than a lineholder.