I don't necessarily doubt that, but we may as well carry it to its logical conclusion. If the US economy collapses, the world economy crashes with it, and we get to take a long field trip back to the dark ages. But the US economy won't really collapse (whatever that even means). We will just have a much lower standard of living. Keep in mind this is being done in the name of improving the average person's life and re-distributing wealth.
Those of you who have children or grand-children, I fear they have little chance of living the life most americans have come to take for granted. I consider myself lucky to have lived between the second world war, and the second civil war.