"Due to the culturally sensitive material of the content on these cylinders, and out of respect for the contemporary descendants of many of the performers on the recordings, access to the majority of the audio being digitized is currently restricted." I'd like to learn more about the cultures of the peoples in this country who came before me - but I am apparently not 'enlightened' enough to experience their words.
I had a Native American friend who asked me for help with digitizing cassette tapes of certain ceremonies. I transferred them, cleaned them up a bit, and burned audio cds for him. I then deleted all my own copies as he requested. He asked that since the ceremonies were for his people that I not keep them for myself, and I respected that.
For a non-snarky response: The difference between your scenario and the one from the article is that with yours, you were just performing a service for your friend, who presumably owned the recordings. In the article's case, the recordings are owned and created by UC Berkeley, which is a publicly funded learning institution.