It absolutely does. Twilio should provide usage history on the phone #. The best predictor of future undesired/spam calls is prior call volume. The use case described sets up terrible downstream effects.
A number having high usage history does not necessarily mean it still is being used. Providing these numbers to the customer is a neat idea, but since they only provide an indicator for how it _was_ used they won't have much value. It might also be a bad PR move since users will draw conclusions from that history that might not be true.
