Not wanting to know the details is a red flag. Sometimes the process of expressing the details can reveal things that were unknown by one or both parties, leading to improved processes. The only acceptable exception would be "Let me explain. No, there is too much. Let me sum up."

To me trust means youre willing to treat people like a black box. If the detail about the outputs is another i/o or something about an output that would appear on a spec sheet, it should be included.

Inner details shouldn't matter. Thats what makes a good summary