Why can't I delete both account and content when cancelling a user account, in Drupal 8? Before, drupal 7 core, and in drupal 6, a contrib module called user_delete,  had this 4th option in deleting user accounts settings:

"Delete the account and its content." (drupal 7) and 

"delete a user and delete all submitted content including nodes and comments" (drupal 6)

But this option seems unavailable in drupal 8 core. Why?

I really want both account and content deleted. The option they offer would force me to periodically delete the unpublished content of the removed account via cron.

Or am I missing something here?
Deleting content requires an access check, and as such the Delete the account and its content. option can't be selected as the default. I presume this is because a user can have access to cancel their own account, but not be able to select the method, and there's no mechanism implemented to provide a fallback for the default.

You'll still see it when cancelling an individual account, provided you have the administer users permission:



If you'd rather get control of that process yourself you can implement hook_user_cancel_methods_alter to remove or change the access check.