This is actually part of a long-running trend with Apple, though. When they release a brand new product that uses new types of connectors, they often include a lot of "extras" that they start taking away again in subsequent revisions.
They did it with the original iPod (now called "Classic"). I remember the very first one I bought included more cables and extras, which were all gone by the time I bought a 5th. or 6th. gen. model, later on.
The trade-in program they're referencing here, though? It's not even done directly by Apple. They contract it out to Phobio. I experimented with using it recently but wound up selling my Series 3 watch to a competing business who offered more for it. If you search these MacRumors forums, you'll find a LOT of horror stories about Phobio. Sounds highly suspicious that they claim damage on computers you send in, hoping you'll just accept the greatly reduced trade offer rather than hassle with them shipping it back to you and possibly being stuck with a now damaged product you can't resell elsewhere.