Yes. That is exactly why. After everything that has happened and everything he has said under no circumstances should that man be allowed to be given the powers he is about to be given. If they couldn't motivate people or get them out to vote considering everything that says a lot about the state of the party. It's their job to make people care. Like I don't think we can just shrug and go "oh well better luck next time" after what just happened. Especially considering all the significant losses that happened underneath the years before
As Shinra says, it says less about the party and more about the electorate.
To elaborate further, the massive number of negative ads Hillary's campaign ran were meant to be a way to get people to care.
"Trump assaults women"
"Trump mocks disabled people"
"Trump is and always has been a racist"
"Trump doesn't pay his contractors"
"Trump is a bad businessman"
"Trump shouldn't have his finger near the nuclear button"
"Trump is anti-abortion"
"Trump is a fat shaming dick, because fuck me everyone can see Alicia Machado has always been gorgeous"
Sure, there's very little there that says what Hillary would do to make things "better". But it shows how indifferent voters were. So much is wrong with Trump that it beggars belief, and yet voters and potential voters just couldn't be motivated. Certainly the media played a part, but a certain portion of the Dem base - and people who could've voted Dem but didn't vote at all - just don't care about other people.
If they did, they would've been scared shitless of a Trump presidency, and that would've motivated them.