I disagree. For Democrats it is simply a part of the process, not a corruption of the process.
You have to remember that Bernie Sanders is supported by people who think they can get everything free. Do you really think they are politically astute enough to just go along with old politicians who tell them that their guy didn’t win because that’s the way it is?
No, the Dems are in serious trouble, brought on by themselves. They are going to alienate 20-30% of their base in almost every scenario.