It's deception. Please put on the box a big warning, "THIS DEVICE COLLECTS YOUR DATA", similar to those on cigarette boxes.
A year or two ago Amazon was swearing that humans don't listen to Alexa conversations until we learned they actually do. IIRC Amazon tried to backpedal: "of course they do, it is their job, we meant humans don't listen _for fun_".
At this point just assume the internet connectivity as such a warning.
You can strip the big here.
Also, plenty of people just leave the kindle in airplane mode and use third party software like Calibre to manage their libraries.
Creative Commons was on the right track with their human-readable licenses, see e.g. this example [1]. Apple is on the right track with their App Store "nutrition labels" [2]. This is what we need for people to make informed decisions. For physical objects like a Kindle, I believe such "nutrition labels" should ideally be put on the box (physical store) and website (online stores), so the consumer is aware before they go home and turn on the device (this makes it easier to compare the Kindle to a Boox or Nook at the store).
[1]: https://creativecommons.org/licenses/by-nc/4.0/
[2]: https://mashable.com/article/apple-privacy-nutrition-labels-...
If the industry moved to a standardized disclosure form (e.g. something like the HUD-1 [1] in real estate sales), people would stop complaining about this.
2. Nobody reads them because most of the time they are explicitly user hostile, I'm pretty sure they are designed to prevent users from reading them.