Well, hmmm. I can't say as I agree exactly. Let me run the list (again):
1. From day one, I felt this was a Dole election (oblige-o-nomination), in which all strong candidates forego a run in order to give the elder statesman a clear shot. Certainly many felt Hillary was 'owed' after Obama's run in '08. This philosophy has, as far as I know, never won an election unless the candidate has served as VP - and even then, it's dicey (Gore).
2. From day one, I felt following up one minority Presidency with another minority candidacy - no matter who it was - would be a very long shot. Comparable to throwing double-sixes thrice. It just wasn't going to happen.
3. From day one, I felt that America is still not ready to elect a woman President. Not just men, but women also. Didn't matter whether it was Hillary Clinton or Kim Kardashian. Too much opposition, even in the 21st century (so far). I'd wait another eight years before trying such a thing again, working the grassroots hard in the meantime. Until Dems can solve the Fox News problem, a woman will never sit in the White House.
And those are only my observations through a 'sexism' lens. I have many others. Frankly, I was and am surprised she did so well. She'd be a more admirable figure to me, if she focused on how far she got.