That’s incorrect, as the original article explains. Absent QE (which the BOE explains in this article can result in both creation and destruction of money, depending on complex factors) money is usually created and destroyed without any influence from central authorities. You can read the article for a detailed explanation, but the simple version is that the financial sector as a whole can increase/decrease the entire balance sheet together. Yes assets and liabilities are balanced, but if the size of the balance sheet grows then there are more liabilities and this more money.