I think you completely ignore the backed of what had to happen to get those specific words on the page. "Goofed up" does not really describe it.
The only explanations that make sense to me are:
1) Apple was planning to provide them free but changed their minds
2) Apple is providing them free, but only for certain buyers in certain situations
This isnt a "typo" or an incorrect description from another accessory. The wording was very specific to the lightning adapter.
I would love to see clarification from Apple.