This is true, but it's also just the tip of the iceberg. We always assume the lefties aren't thinking long term- that they can't see past the next election to the existential danger this country faces from Islamofascism.
But I just don't think this is true. They DO think long term, and they understand that victory doesn't just loose elections for them, it creates a strong, pro-American, pro-independent national identity that is polar opposite of the socialistic, open-borders world government they so desire.
The US will go either one way or the other. And the Left very much wants to lord it over the peasants.