If everything I've heard and observed can be counted upon as fact, I truly don't understand why Ballard is contributing most of the degradation of the wreck over the past 19 years entirely to human-caused damage. I wouldn't imagine the trunk vents have been landed upon by subs, but almost the entire top shell plating over the past 19 years have crumbled to nothing. I believe most of what we are witnessing in "damage" is merely the process of 90-plus years of salt water doing its thing to metal.
Another thing I don't understand is the re-assertion that the bell was "stripped" from the mast. The 1985 exploration pictures show that the bell was never ON the mast - only the bracket. He or his spokespeople keep making that claim, but constant re-iteration won't make it so.
In all fairness, was it not determined that one expedition DID in fact pull a little at the wall to offer a better view of the captain's tub? True or no, the bulkhead WAS all but lying flat on the deck when first filmed in 1985, and the bridge wing bulkheads, bent or leaning 19 years ago, are all flat now, too.
Bottom line: salt water, thin top deck metal and 92 years of time don't mix very well... it happens.