I personally think that if somebody is willing to use their own money to bring it up, then it's up to them.
Like most of us, I had family that fought in WW2 and we all lived in the east end of London - we got well bombed, but saying that its still a hunk of metal littering the sea bed at the moment, and if its raising makes more people aware of what occurred 70 odd years ago and the sacrifices made, that's a good thing.
this is just my twopence worth and I am not arguing with other people's views.