There's no reason to assume that the random guy you quoted is right or even knows what he's talking about.
Likewise, there's no reason to assume you know what you're talking about, this time, so why did you quote that post as if it's the ultimate truth on deficits, and why are you speaking as if with a voice of authority on the matter?
A lot of the people talking about the economy in the media say things that are aligned with their personal interests, and there's an endless supply of commentary that sounds plausible when you don't understand/know enough yourself, happens to be something you want to believe in, and is still nonsense, bullshit/lies, or just detached from reality.