People are human and make mistakes. There are also many people who disregard basic safety rules. In Hashem’s great rachamim, He saves us all the time unless there’s a specific cheshbon otherwise. But now, as Rav Brudny said ” is clearly a midas hadin out there that manifests itself in mayim.”
We need to take precautions and follow safety rules and common sense, that is the first step in preventing tragedies. But clearly, with so many stories, there’s more going on than only not obeying rules.