It is pretty obvious why they are doing this though, but it also means you don’t own them, you are renting them.
https://rl.bloat.cat/r/Calibre/comments/1h6wrlq/assistance_with_kfx_drm_removal_in_calibre/
DRM removal from Kindles from 2024 doesn’t seem to work, that is why they are removing it.
It is very easy to remove DRM from kindle Books, but since you will not be avle to download them it will not be possible anymore.
They do have other ways such as SMS if it is critical, but most people simply share the twitter link via WhatsApp and you can be more updated by using twitter. Most people haven’t moved to Bluesky or Mastodon, so if there is flooding or heavy rain most people will share updates on their location via twitter and WhatsApp like for example flooded streets.
I don’t think it is a good idea to block twitter completely. Some countries use twitter for official announcements, including emergency warning.
I would recommend this channel https://youtube.com/@moddedwarfare.
In Patreon, the users are selling their content, in this case Reddit is paywalling user content without paying the users.
I hope so too, twitter is awful.