Astoundingly this must needs be said apparently but they are playing you and they do it together.
But the Democrats support X reform policy or Y special interest
Sure, maybe but when does tentative support amongst Democrats ever lead to anything being done unless that tentative support is for selling foreigners weapons or bombing them?
The two parties and the federal constitution of 1787 which empowers their game are, by design, meant to empower a wealthy few at the top while keeping us proles passive. The two parties serve this interest by providing capital with two factions to switch between in the course of their class exploitation.
The Republicans are their gas pedal for exploitation while the Democrats are their break pedal. They don't actually intend to slow down the exploitation in any meaningful way, only enough to give the distressed proles the impression that this new democratic administration “hears you” and “wants to fix things” which translates into 2-4 of nothing being done, Dems electorally shitting the bed, the people's frustration flipping back to them and the Republicans are back to full throttle the exploitation while the Democrats get to happily return to the minority where they are free to bitch and complain without any of the burdens or expectations of actually governing.