Delete multiple contacts in Address Book

Using the website connect.xfinity.com, and looking at my Address Book, if I select more than one contact, the delete button is disabled. I can delete individual entries one at a time. However, to delete 45 entries, I can't pick all 45 at once. 

After 3 days of calling into Xfinity Support and speaking to various techs, I finally was told that this is how the address book is designed. When I asked why customers are not allowed to delete more than one contact, I was told it is a safety and convenience feature to ensure customers don't delete addresses by accident. 

I asked if there is anyway to not be provided that convenience and I was told no. I asked to have the suggestion submitted that customer be provided the convenience of being allowed to delete multiple contacts rather than the convenience of a safety feature they did not ask for. I think I was dismissed.

Does anyone know a practical reason why we would be denied this convenience? Also, how do I submit this RFE and have it taken seriously?