Is this module still necessary for Drupal 8?

This is now part of Drush, and running drush entity:delete node --bundle=article will delete all Articles.

https://www.webwash.net/how-to-bulk-delete-content-in-drupal/#h-using-drush

Perhaps the project description can get updated, and this added at the top, since this project is the #1 in the search engines searching for "drupal bulk delete nodes"?

In Drupal 10, simply use entity:delete in Drush.