Author of the article here. Can't help but ask: Do you not believe that Bitcoin's blockchain sometimes allows powerful forms of financial tracking? Are you aware there's a whole industry that of companies designed to do exactly this?
In contrast, Bitcoin has a public global pseudonymous ledger. No warrants needed, a copy is freely available. Letting you trace flows of money from account to account instantly with no vendor issues and no judge to convince. Sounds powerful to me!
The article's phrasing is both correct and reasonable. And the reason to not explain every detail in a general-audience article is that most people don't care about the details. If they did, they wouldn't be reading general-audience material, but more specialized stuff.