I didn't make this clear enough in the article, sorry for the mix-up! Yes, iPhones support Osaifu-Keitai, and it's Android phones which have this problem. I've now updated the article to clarify this.
A writing feedback: After you added the "Clarification" update, you could also have put something like "Update (read below)" in the bold part "NFC-F support is not enough to use your phone as an IC card".
Otherwise, thanks for writing this article, it is very insightful, especially the whole parallel NFC standards development process in the early days of the technology by Japanese companies like Sony.
