Yes, that is it, democrats/progressives have their own itinerary when they go into office.
And like Biden they lie to get there. For example in my city the rent control candidates had people going door to door telling people that unless they voted for the rent control slate rent control would go away.
Which is completely untrue because rent control is in the City's Charter. But yet that's what they feed the public before every election. I guess the people forget about the rioting in 2020, and how these representatives told the police to stand down, so the rioters could loot at will.
So you are exactly right they represent themselves and their causes.