What do you believe syncing means? This discussion talks about whispersync reporting last page read and most recent page read events. What do you think that's supposed to do?
You're the only one fabricating accusations about "analysing" in a discussion about how Kindles send data with whispersync, a system widely known to be used to sync data across devices.
More importantly, the only usecase mentioned in the discussion that resembles anything like analysis is synching page reads across devices, and tracking reading progress to compensate authors who make their books available through subscription services.
Either you know stuff about "analysing" that for some reason you're keeping a secret, or you're talking nonsense about stuff you have no grasp over.
> "most of what's mentioned in this article are metrics used to understand how the features are used (bookmarks, highlights, dictionnary, etc.), how much they are used, and in which country."
Besides, I don't appreciate phrases like "fabricating accusations" or "you're talking nonsense about stuff you have no grasp over". I'm may be wrong, it happens often, but even if I am this aggressive tone is not in place. You can point out my mistakes politely if they exist, same way as I do with yours.