It's not that the water is responsible.Your logic does not make sense. By your reasoning, if someone throws a child into a boiling pot of water, the boiling pot of water is partially responsible.
The way I interpreted the post is that the boiling water itself poses a potential risk, depending on the actions of others.
If someone is careless and leaves a child unattended near the water and the child is burned then it is still an accident due to negligence.
Imo