The military censor in Israel does the exact same thing: ostensibly to prevent enemies from using the data to improve their systems, in reality as an attempt to keep domestic morale high (it only ever manages to slow down the inevitable fall, though).

Also, for people using some Readarr derivative with Hardcover metadata, how much of a pain is it to migrate from Goodreads to Hardcover (and is it worth it)?

Calibre-Web has always been interesting to me. Can it be deployed in such a way as to keep a Calibre content server also accessible? (e.g. for sync with the desktop app/Koreader/etc.)

Yeah, unfortunately. Apparently it was hell to maintain, especially the metadata server and all.

but why would I believe that?

No inherent reason to believe that, but seems like lying about this should be illegal. The belief is in Meta’s compliance with the law rather than in its ethics, which, according to these claims, is unfortunately an unfounded belief.