I for one do not think it is disrespectful at all. Yes, it is sad something happened. However, if there is an underlying cause of this that can be prevented, KNOWLEDGE is key. I am willing to bet that 90+% of cruisers have no clue what a stonefish or scorpion fish is. I bet they never knew they look exactly like a reef rock. One tiny sting from these releases lots of toxins into the body. Some people are far more prone to far more risky outcomes from these toxins. I am sure many people think that stingrays are only at the feeding station. One wrong step on the sandy bottom and you have a nice stinger in your foot. That can cause a multitude of problems as well.
People think because it is Disney, it is safe. I watched a video where a guy filmed a green eel on the snorkeling trail. Eels are mostly docile. However, you corner one and it feels threatened, those sharp teeth are going to cause some serious damage. I bet people don't know about having shiny items on in the water. Bright flashes underwater attracts barracuda. A small size barracuda can shred a bunch of skin off in one fast pass.