While i agree that depth of water should protect Lexington for the moment HMS Exeter was only in 200ft of water not the 8000ft of Lexington, it sounds horrible but the deeper they are the safer they are at the minute, unfortunately no governments seem to care about this issue especially the Indonesian government whose existence is due to these wrecks in part.
The aircraft however are not on the ship and had no crew in them when the ship was lost, the ship itself is the war grave and the US Navy is already looking at recovering some of the aircraft so they can’t be worried about disturbing a grave.
Curlyboy