Interesting article. There are a lot of points which are arguable (as always) but it is an interesting read none-the-less. There was some hyperbole, and I don't think he is trying to advocate massive (unnecessary) increases in government spending, but is trying to argue that running a budget deficit is "ok."
one of the comments is pretty good as well:
People act as if the government is some separate entity from the rest of the economy. They act as if we just cut Gov't spending, all it will do is effect the deficit. It will not effect the economy. This is totally absurd. Every penny that the government spends eventually ends up as someone's paycheck (it might have to go through several transactions first, mind you). Whenever you cut spending, that is someone with less money (or maybe someone who no longer even has a job). If the cuts are big enough, this will effect the economy as a whole quite a bit as those people no longer have money to spend on goods and services. The tax base will decrease. He is pointing out the opposite. More spending puts more money in the economy.