I've used #Calibre for years and appreciate the heads up about Calibre's latest update, which now includes AI.
I've been following the thread that discusses Calibre's update over on the #MobileRead forum (link provided below). The developer, Kovid Goyal, has responded to user comments with some comments of his own that provides some context on this topic.
My Kindle Paperwhite now runs KOReader.
@cw
The two most high-walled gardens of modern #ebooks: Apple and Amazon. It is a wonder any of it still works together, as the companies try to lock in their customers.
https://www.mobileread.com/forums/showthread.php?t=283371
This huge thread has a lot of the broader story. The first page is kept up to date with some current solutions.