Oh, I concede that there is no guarantee that an organization or country advanced enough to launch a mission to the Moon would be responsible custodians of the information (alternate timelines where Germany or the Soviet Union land men on the Moon come to mind). But they might be less inclined to destroy it outright instead of seeing what they can use for themselves.

The best we can hope for is to make data available to the future; what they do with it is ultimately out of our hands.