In practice, the Dems can't do a lot. They have a one vote senate margin and can only pass things through budget reconciliation based on what Joe Manchin is willing to vote for. Also Biden is a weak president and senile. There are also plenty of corporate Dems in congress. But on paper they have actual policies. Republicans don't have any plan for the country and are in opposition to the most popular policies in the country.
Stuff like raising corporate taxes, taxing billionaires, 15 dollar minimum wage, a public option, infrastructure, climate change initiatives, etc is very popular with the public. But the Republican party is diametrically opposed to every single one of these things. Even the bipartisan infrastructure bill that was negotiated down from Biden's original proposal. At best that thing is going to get a handful of Republicans on board and that's maybe.
While both parties are awful, the Republican party is the biggest single obstacle to actually getting things done in this country and has been for decades. They have no plan for healthcare. They have no plan for infrastructure. They have no plan for anything except increasing military spending, deregulation, and lowering taxes for the wealthiest people in the U.S.