For me this comes down to a question of time. These bones and this ship
Have been resting for 1000 yearns. We have only gotten good at archeology in the last 30. Before that we were really sophisticated grave robbers. What will archeological techniques be like 100 years from now and can we afford to wate? The price for the hope of learning something new may be that a future generation may not get to learn something at all. We are very meticulous but in the quest for old nails can we afford to deprive the future of say hammerng and assembly techniques or something better we can't begin to fathom?