I'd love the ability to delete Lessons from the Lessons Report. At the very least, I feel like lessons that are not associated to any courses should be able to be deleted from this report via the Support Admin Experience. I don't currently see any negative implications of doing so, since the lesson would be available in Create to re-publish. Maybe we could create a "Remove" button vs a "Delete" button which would just remove it from this report but the lesson would still exist in Create to avoid any confusion.
This would be a very good compromise, it would provide functionality seen elsewhere in the LMS (e.g. Departments and Templates), and would reduce/eliminate support requests to delete lessons.