Further to this discussion, I am pleased to announce that I have made a new, enhanced, version of my little block for the current version of Moodle (3.5).
In this new version, it is now possible to export Glossary entries to 4 question types: Short answer, Multiple choice, Matching or Drag and drop into text.
The block is available in the Moodle plugins directory at https://moodle.org/plugins/block_glossary_export_to_quiz
Looking forward to your reactions, comments, bug reports etc.
Joseph