This isn't the fucking West Wing, man. Remember all the interparty drama in spring of 2020? All the sniping between Warren and Bernie supporters, all the conspiracy shit about the voting app in Iowa during the primaries? Even running against a monster like Trump, it actually takes serious work to cohere support around one candidate. Imagine all that drama multiplied by a hundred and compressed into a very short timeline with no summer or fall for everyone to get their shit sorted out and organize after a winner emerges. And if that winner isn't Harris, starting over from fucking scratch both in money and in campaign personnel.
The Democratic party is fucking terrible at a lot of politics. But they generally know how to run a normal campaign. They need to make this as close to something they're used to doing as they can, because the Democratic party trying to figure out how to do politics in truly uncharted waters should fucking terrify you.