I think you're right.  It turns out the Democrats really underestimated just how "hated" Hillary was.  The analysis I've seen shows that the Democratic "cross-over" vote going to Trump was as much as 8 to 10 times as great as the Republic "cross-over" vote going the other way to Clinton.  

Certainly, one can blame it on misogyny, sexism, or whatever you choose, but the net result was Hillary was a very "unattractive" candidate; especially to white males and, although to a lesser extent, to white females.  While the Democratic Party power-elites, the DNC leadership, supported Clinton and manipulated the process to gain her the nomination, she turned out to be a far weaker candidate than anyone predicted.  

The Democratic Party now has a huge task ahead of itself....defining just what the party represents and WHO the party represents.....it will be an interesting process to watch...