In my opinion the boat accidents in Thailand are less relevant as they almost always overload the passenger boats or day trip boats, and there is almost no security measures.
What worries me more is the number of LOB accidents with divers losing equipment. Of course news articles always make things look worse than they are (I'm sure chance of losing something on a LOB is much lower than being stolen something on the street).
Would the number of LOB sinking / fire change your decision on LOB going forward?