I think I'm probably repeating something that has already been said, but--nonetheless--bears repeating.
To Amazon, we are all edge-cases. They are not interested in helping (or, as far as I can tell, hurting) people who sideload books, and they has even less interest in people who sideload books and modify the metadata to look like an Amazon book.
I strongly suspect that Amazon is focused on a "common" case of a user who switches back to a long-unused Kindle and that they think they are doing a service by matching the "Amazon" books on that revived Kindle to their records of what should be on it. They probably don't keep track of things like requests from the web account to remove a book from the somnolent (they think) device, so a request to delete just fails silently. When the supposedly retired Kindle comes back into service they don't check removal requests, they just match up to the status of each Amazon book on the web list.
The above is just guess work but makes seems to me to be reasonable explanation for why Amazon does what it does.
The fact is that all of you are just odd fluff to Amazon.
So am I, of course.
|