If Biden and the Dems can't convince two Democratic Senators (honestly really just Manchin because if he goes along, Sinema will too) to pass legalization via reconciliation, they are trash. Being a good politician means being able to persuade people to vote for your cause. By definition if they can't do that, they are bad politicians.
@DEAD7 is this the slippery slope you're referring to where senators only purpose is to do exactly what the president tells them?
his duty is to his constitutionts first. If they're fine then it is what it is. This entire commitment to party hierarchy over sensibility is the exact tribalism that is breaking the political system.