There are many use cases for rclone. Mine was to "sync" with my "free" 15 GB Google Drive on Linux. While most of my files aren't particularly sensitive, there are a number that are. Until recently, I encrypted these manually using 7-zip. The problem with that was having to decrypt manually every time I wanted to look at them.
Rclone has an encryption overlay that can be used to encrypt either a single folder or all folders in a configured remote (a networked storage system like Google Drive, OneDrive, AWS S3 or GCS). Setting it up is pretty easy, but an unintended consequence not discussed in any of the many tutorials on rclone encryption is that if your encrypted folder is a folder on an already existing remote (which is my preferred setup), using sync on the whole remote will remove the unencrypted files in the local copy of the folder and replace them with encrypted files.
The solution to this conundrum isn't