I think this article (and I've seen another before just like it about the poor/broke distinction that had a really powerful piece about mental math while buying groceries) do a disservice to themselves by focusing on the usage of two very common, widely used words. It's fine for words to have multiple meanings in different contexts and those meanings are defined by usage. If people say "I'm too poor to get a pool membership" then that's what poor means, at least in some contexts. Prescriptivism of common, mundane words is a terrible way to make a point. The author is hiding their real point, which would be still more powerful without this unnecessary baggage. See what we're discussing instead of what the author probably wanted us to discuss? If she wants a distinction, then there are other words or phrases (chronically poor, perhaps?) with more specific meanings. But it is fruitless to get "heartbroken" that people don't understand a distinction that isn't common use.