I understand your frustration (I'm right there with you. I felt like a family member died after the election), but I think the statement I quoted is an exaggeration.
Trump had a few groups of people that helped him win the election. I'd break them into these groups:
* Traditional republican voters who didn't like much of what Trump said, but worried about liberal Supreme Court justices.
* White supremacists. Most Trump supporters weren't white supremacists, but most white supremacists were Trump supporters.
* People who feel that Washington is deeply corrupt and want to see the existing system torn down. Trump has pledged to introduce term limits for congress people, along with banning certain government employees from becoming lobbyists for a period of time.
* Working class people who liked Trump's trade policies. He's pledged to renegotiate certain trade deals in an attempt to lessen our trade deficit. That would make it less appealing to outsource jobs, which union workers found appealing.
I voted for Hillary, but I admit that I like his anti-corruption and trade deficit policies. Unfortunately I'm horrified by his policies on muslims, undocumented immigrants, etc.
Quite simply, people who think like you and me lost on Tuesday. We lost badly. We need to take some time to figure out where to go from here, because if we run the next election like this one, we will probably lose again.
We spent a lot of time being upset about the white supremacists who backed Trump. We didn't spend enough time addressing the concerns of union workers, anti-corruption advocates, and republicans who didn't like Trump. It probably cost us the election.