I agree. However, some dishonest services allow to download, but downloaded file is DRM. It is even worse.

• Setup new user to sudo

I hope it is not a passwordless sudo, it is basically the same as root.

If you are beginner in Linux, try beginner-friendly Arch-based distro: EndeavourOS, CachyOS, Manjaro

You can learn Arch without too much hassle while using one of them

Good. However, 2 x 16TB Seagate HDDs still cheaper, isn’t it?

When DB is RDS it is more convenient, why not? But, depending on needs, there could be databases not in RDS and you use traditional methods to backup them.

Cryptpad still doesn’t support rclone file transfer or at least WebDAV? Was waiting for this for ages…