Sadly no. Bernie Sanders explicitly put Citizens United at the top of his legislative priority list. Clinton used her pull with the DNC to undermine his nomination, and the rest is history. This was a triumph of the corrupt status quo over a high integrity pol, and it happened within the DNC.
Citizens united was literally a judicial coup against constitutional rule. We went from flawed democracy to literal plutocracy the day citizens united was ruled on.
Politicians must fund raise before their primaries and we see many fundraising efforts throughout their tenure too.
To get elected a candidate must:
Fundraise -> win a primary -> win a general election.
Therefore fundraising is structurally an election and money is structurally votes. Since money gets to vote on candidates before people do, we end up with a "democracy" that responds to money and not votes, which is pretty blatantly obvious. It's also why many people feel that both parties are basically the same. It's not that they're the same, it's just people with money get to filter candidates first and therefore both parties are the same in that they have to appease their funders first and can't threaten corporations or rich people because then their funding goes down and their opponents goes up.
Biden is just another example of this (as was Hillary). Biden 2024 is made possible because the democratic party doesn't have to answer to their voters. The democratic party has a symbiotic relationship with republicans where neither has to rule effectively or hold themselves to any standards which allows both to profiteer and trade stocks while the country slowly becomes oligarchic/fascist.
You’re half right.