I also think part of the problem is that with the internet, we may just have a lot of data readily available, so much so people are overwhelmed they just tune it all out. We can spend a lot of time wondering why people vote the way they do but if the losing party doesn’t take the time to be retrospective and humble as to why they lost then I can’t blame people for that too much.
This is similar to how someone will slowly abandon their old friends to be relevant with the “cool” kids who will never see you as part of their group no matter what, and your old friends end up making new friends leaving you alone. If this doesn’t work in real life, I don’t get how this could work in politics.
The Democratic party has to stop treating us like the old friend they visit every so often just to get something out of us while forming closer relationships with others who have no business being their friend.