If the debris is from the Titan imploding, isn’t it surprising that there’s actually debris big enough to see?
Earlier an interview was posted of a journalist (who is also a scientist) who talked about his own experience on a reseach submersible that explored the Titanic many years ago. On that occasion, they attached items to the outside of their sub in water-proof enclosures to show the impact of the pressure on those items and when they ascended back to their mother ship/research ship, they opened the bags and could see how the pressure had reduced the size of the items considerably, but they were still recognizable.
I don't know if they will find the remains of the Titan passengers, and if they do, will the equipment be able to retrieve them? I hope so. Apparently these ROV's are used to retrieve downed airplanes and other vehicles, so perhaps they are able to retrieve much of the debris field, including the remains of the deceased, if this is in fact what happened.