The whole weirdness of this election is that there was no one or two major factors that cost Hillary the election. A multiple small factors like this just all fell in the place.
This is the case for most if not all presidential elections. Recollections of "the moment that so-and-so won/lost the election" are mostly instances of retroactive shoehorning.
That's what made Hillary's comment that she would have won the election 10 days earlier so baseless and ridiculous. An election isn't a snapshot. It's a culmination of hundreds of events, some bearing more weight than others.
