Don't throw away your Kindle, Jailbreak it and take back ownership. Make your Kindle even better with KoReader and other apps.
If you wanna see whats possible i recomment this Yt video.
If you wanna get started here are all instructions:
https://kindlemodding.org/
Don't let it scare you it seems complicated but its just a lot of (easy) steps. So definitely possible in <2h.
I know calibre has some dedrm add-on that removes DRM with an anonymous adobe digital editions account. That might be able to do the DRM removing and converting without needing to install ADE
Im definitely not going to install an Amazon or adobe software on my Pc, dont even know if it works on Linux🙈
I know calibre has some dedrm add-on that removes DRM with an anonymous adobe digital editions account. That might be able to do the DRM removing and converting without needing to install ADE