OK, but it's an important distinction, when you say:

The Democratic Party's ambitions extend no further and never will.

If, in that context, you mean the people who control the party, that's fine, you are correct, but other people are likely to hear that there is no hope of ever changing the direction of the party apparatus itself. We can see from the Republican party that it's not impossible to seize control of a major party - Trump and his maga cult did it. Bernie almost did, twice. We can take the reigns and steer the party where we want to go.