Official comment
Thanks for your feature request.
We always have to balance ease of use with the number of confirmation prompts we require. We have customers who would be very upset at having to type the word DELETE for removing a single contact. We do post this confirmation that identifies the resource being deleted as the Contact:
While our initial reaction is that we wouldn't make this change we'll certainly leave this feature request open to see if more people would like an additional prompt for deleting single contacts.