I’m not sure if your comment is sarcastic or serious, but I’ll answer anyway.
As I stated in my article, I had an iPhone and used it to pay bills, etc. as necessary, but went hours at a time without checking it. This is not akin to having internet at home; data speeds are slow and data usage is capped at a very low amount. If you want to consider that having “home internet”, so be it, but because of the cap on my data, I couldn’t use it in such a manner.
Anyway, because of a temporary financial hardship that I did not detail in this article because it is irrelevant, I went quite some time without a cell phone plan at all and had an iPhone that only worked when accessing public WiFi while in transit. When not connected to public WiFi, it simply had no service. I could access some apps offline (photo editing apps, and I could call 911 in an emergency). That’s about it. So it is indeed possible to have an iPhone without a data plan. When connected to WiFi, you can send texts and make calls as usual.
I think you may have missed the point of the article. Being “connected” doesn’t have to be an all-or-nothing situation. I didn’t write this article in a competitive manner (e.g. “I have less internet than you!”). My sole intention was to demonstrate that there is something very rewarding about coming home at night and not connecting to the internet, whether by choice or by necessity.