Over time, the public library system has developed a rigorous set of ethics and practices concerning patron privacy and confidentiality, because librarians have seen first hand what can be done with information about what a person reads and what information they seek out, and here's the digital reading community plugging their personal libraries directly into surveillance dragnet services.
There was no real market rationale for including AI in Calibre. It's not like people were going to switch to a competitor if it didn't have AI integration, because Calibre effectively has no competitors. It's the one name that always crops up when you ask how to do something even moderately complicated with ebooks. And now people are actively looking for alternatives.
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