I thought that the article was going to make the more relevant distinction between "transient low income/wealth" and "reasonable expectation of permanently low income/wealth". If we're going to specify a useful word, I think that's more interesting than what she's saying about "so little income it impacts your life stability" vs "low disposable income". I don't think it's useful for this woman to call herself poor, she had an explicitly transient state of unusually high outgoings and low income. She never looked down the barrel of 20 years of the same situation.