Should we delete students progress (etc.) as well when deleting an enrollment?

Since v3.33.0 we introduced the ability to delete a student enrollment via the Students table (in course/membership) and/or from the Order meta box.
The student enrollment deletion just deletes strict enrollment information like:
```
status
start date
enrollment trigger
```

Should we delete also the student completion progresses (and at this point quizzes, assignments etc)?

This question has been raised in HS-125484 where _we_ considered this as a potential bug.

Start by tracing enrollment deletion from the Students table and the Order meta box. Review how the named enrollment data is removed, then determine the intended handling of student completion progress, quizzes, and assignments; done requires an agreed deletion policy and corresponding behavior.

Written by the indexing model from the issue text.