Agreed. Afraid a lot of threads here are talking about different things. Casually dating for a while shouldn't carry a lot of responsibilities from either party. Yet as things deepen or carry on for extended periods, it's reasonable to expect a more equal division of labor.
these he-said she-said problems are hard to resolve with one party (and that is part of why those relationship forums have the worst advice ever). The issue here can lie anywhere from "they weren't aligned on how far they are in the relationship" to "she did not take into account the expenses he did pay but only remembered the refusals". The tone of the article makes the reader want to think the boyfriend was a selfish step parent who can't budget, but who knows the real truth?