“Upload files to” not presented as an optional field when uploading an image

One of my reasons for using Responsive Lightbox & Gallery is for the folders capability, which helps to provide some structure to our media library, where we already have over 500 images and growing, and need something to help organise it.

The problem I’m having is that when contributors create posts using the Gutenberg editor, and add an image block, they simply click on the “Upload” button, which does not require them to specify a destination folder for the image, and they all end up in Root.

Despite all my attempts to persuade them to go to the Media Library first and upload new images there, where they are asked to specify a folder, they continue to take the short cut, meaning I have to constantly monitor the media library and update image settings.

Is there a way to either disable “Upload” in the Gutenberg image block itself, making users go to the Media library first, or to have the Image block prsesent users with the “ability to specify the destination folder as part of the upload process”upload files to” option? I am open to alternative suggestions, that don’t rely on people having to remember to do something that doesn’t seem obvious to them ??

The “upload files to” option appears in every other means that I can find to upload files. The image block seems to be the one and only loop hole.