Not to put too fine a point on it but there are tossers everywhere in every pastime and job.
I hit two bouy ropes in Orkney last year that were not hanked up and were left drifting more than 50yds from the actual bouy plus even had a fisherman who deliberately was casting for the bubbles.
Never had a problem with fishermen on wrecks but I can imagine there are some diver idiots who will have, unfortunately they do get everywhere.
Even as a diver I would have to admit that a considerable number of divers do not know how to properly operate a RIB or have any consideration.
ps I could not be called posh by any stretch of the imagination