I guess people who only have a smartphone, and who own no other electronic device, really don’t have any option for permanently downloading their purchased Kindle books?

I guess I had a desperate hope that there might be some way to do this, in light of the new Kindle policy (books can only be downloaded onto a Kindle) which soon goes into effect.

I have a good phone, a Pixel, and it has plenty of storage space, but it sounds like you have to have a laptop to make a permanent download of your whole library?