[Locke]

I don't think this article is making a claim about whether or not these phrases indicate that someone is about to lie to you.

The phrases themselves are often untrue.

For example, if I say "It’s not about the money, but...", what follows is not necessarily a lie. What the article claims is that I'm about to make an argument based on money and that I'm trying to preemptively deflect any counter-argument. Therefore, the phrase "It’s not about the money, but..." may, strictly speaking, become untrue. But that doesn't necessarily have any bearing on what follows.

[aditya42]

In that case it's a very badly titled piece.