You can still remove DRM with Calibre and the PC Kindle app (not sure if it works for the latest versions of the Kindle app, but the older versions can still do

You can still remove DRM with Calibre and the PC Kindle app (not sure if it works for the latest versions of the Kindle app, but the older versions can still download books fine anyway). That said, I've switched to Kobo a long time ago. It's easy to de-DRM, and under the encryption there's a bog standard EPUB with some minor Kobo-specific extensions - and no additional image compression, which is important for comics and manga. I have a Kobo reader too, but these EPUBs work everywhere and don't suffer from any AZW->whatever conversion issues.