On a fresh site, as the admin:
- Navigate to "Site administration" > "Users" > "Privacy and policies" > "Privacy settings" and enable the setting "tool_dataprivacy | contactdataprotectionofficer"
- As the site admin go to your profile and under the "Privacy and policies" section click "Delete my account" and go through the form to create the deletion request
- Run cron and do all that jazz so that you can approve the request
- After approving the request, run cron again and behold, no more site admin
We would have expected something to stop the request being made or at the very least something to stop it being processed.