LOL!
When you buy something on line, and the seller gives you free shipping, do you really think you are getting something for free?
Apparently you do. That's a standard marketing tool. Weak-minded people see the word "free", and they get all excited thinking they are getting some sort of wonderful bargain.
You did actually answer my original question, however, so I thank you for that, in spite of your unfounded and irrelevant ad-hominem insults. By providing the price for that adapter, you proved that they aren't free. If Apple chose not to include the adapter, they could charge $9 less for the phone (a reduction of 1.4% off the base price of the cheapest iPhone 7).
You're an idiot, because you don't go after the car manufacturers. Every option they offer, has a huge markup. Hundreds if not thousands above the cost of manufacturing the items. Yet you don't complain when you overpay for options on cars, do you! Answer me on that.
Apple is offering a part for free, bundled in the box. Separately, it is a $9 item. Chump change. It wasn't offered before, and it is freely given now. So it is free! Free. Why can't you understand that? Either you have a specific agenda to target a single company, Apple, or you're an idiot. Take your choice.
You are either a weak-minded fool, or you are creating a mountain of disgust because you are an anti-Apple bigot. Pure and simple. So what is it? Idiot? or bigot?
The part is free, and nothing you say can alter that truth. Otherwise, you would chastise other companies who follow similar practices, yet you don't. Gotcha.