It is not my fault that you misread that sentence and thus proved that you missed the whole point of this article. Assuming that you read the article in its entirety, that is.
The sentence reads “Apple going down that road would practically mean that the company has no problem treating mainstream iPhone buyers as second-class citizens”. That means people who would choose to buy either the vanilla iPhone 14 or the iPhone 14 Plus.
If Apple keeps exclusive to the A16-based iPhones features that are not dependent on hardware but could have also been developed for the A15-based iPhones, then YES, the company would treat consumers owning the cheaper, A15-based iPhones as second-class citizens. It would mean that it deliberately treated consumers that bought the more expensive, A16-based iPhone Pro models as first-class citizens.
If that is too hard for you to understand, there is not much more I can do for you, MrFabulous. Sorry to disappoint.