

Democrats didn’t flip on gay rights until Obama
And Obama didn’t flip on gay marriage until the end of his first term. Biden came out in favor of it, which forced Obama’s hand, but it wound up being the right move; it energized the base when enthusiasm was starting to wane. Then, under Obama’s leadership, they continued to do nothing to establish gay marriage at the federal level.
…except the centrists and neoliberals went to Trump. Hillary and Harris both spent their campaigns courting them, and they both lost. Biden, for all his faults, had Bernie help him craft a progressive policy agenda and won. The Democrats undermine the progressive wing of their own ostensibly left-leaning party in primaries and other intraparty conflicts, then get to the general elections and get wrecked because neoliberals would rather vote for the Republicans than pseudo-Republicans.