On a long enough timeline the odds that regime puppets like Amazon will start erasing history is 100%.
Download the ebook and then convert it to a PDF file. Once it's no longer in its original format don't think you're at any reasonable risk of stealth edits.
I'm assuming that epub is the native format and so when Amazon's tool does its censorship routine, it scans your device for a file matching its own internal format and replaces it. If that's how it works, then going for a converted format would be best since it would be less likely they'd replace it
On a long enough timeline the odds that regime puppets like Amazon will start erasing history is 100%.
Download the ebook and then convert it to a PDF file. Once it's no longer in its original format don't think you're at any reasonable risk of stealth edits.
EPUB works better and you can own the file like a PDF.
I'm assuming that epub is the native format and so when Amazon's tool does its censorship routine, it scans your device for a file matching its own internal format and replaces it. If that's how it works, then going for a converted format would be best since it would be less likely they'd replace it