ping
Not that I disagree with you, but you’re missing the larger picture:
Did you see the movie Titanic? I’m hard pressed to recall a single movie which portrayed a shipwreck as hallowed ground.
It’s just not in popular culture to treat them in such a manner. The only examples which come to mind are the Arizona & Hunley, the latter an afterthought once it was determined that the men’s remains were, indeed, encased in the mud-filled hull (it was part an archaeological expedition and in part an investigation for the cause of the sinking).
The idiom ‘Davy Jones’ Locker’ is rather apt in this respect to describe public opinion for shipwrecks, military or otherwise.
The US Navy has this same worry about a certain wreck in Pearl Harbor.