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In the context of this article, from an end user perspective these are all solutions to the problem of sending money internationally. They may be very different technologies on the back end, but they all compete with each other on the front end.

AKA money exchange transactions

So, it perfectly mimicks the experience of talking to a journalist about this?

Don't mean to sound snarky, but I offered to help a journalist (back when GigaOm was around) to understand the bitcoin ecosystem, but she would keep getting the categories mixed up (Bitcoins vs altcoins vs ripple vs colored coins), drawing unnatural boundaries between them, and then repeating the confusion 3 exchanges later no matter how many times I explained why the don't belong together and she confirmed that she understood.