Its not idiotic, because democrats have had numerous opportunities to enshrine abortion and contraception into law, while controlling both the legislative and executive branch. Republicans are perfectly able to pass their abhorrent laws, but democrats seem to not be able to pass good legislation even when they control the government. Until Roe was overturned, this state of affairs was actually very beneficial to democratic politicians, because they could recycle abortion as a rallying point every single election.
I don’t have any evidence for this but purely speculation on my part: racism can explain a good amount of that. Biden has in the 90s voted for “tough on crime bills”, he is the definition of political establishment, and is a white man from Wilmington. Obama definitely is not textbook underpriveleged but he doesn’t have those points that biden does