Hello app_user_13!
I have an extremely long list of blocked callers and I would like to delete that list.
You don’t delete the list. The only way to remove the list is by unblocking the numbers.
I don’t want to unblock them I just want to delete the list.
You cannot.
Apple does ALL of these updates but can’t figure out how to make deleting the list a reality.
Tell them about your thoughts here: Product Feedback - Apple.
Now, these numbers have to be unblocked one at a time, which, on your iOS device, may take a really long time. However, if you have a Mac, you still have to unblock them one at a time, but you can do so much faster. To learn how, please see: Quickly remove blocked phone and email co… - Apple Community.
Have a nice day, and good luck!