While I don't like it, people are entitled to do and say whatever they want privately. I really don't care if people make a joke about it around people they know.
This crossed the line though. Not only is it mocking an accident that left people with serious injuries and traumatic memories, but the victims or their families could easily see it. I know that most people on here will have no idea what it's like to be in that type of accident, but it's not hard to imagine how you would feel if someone made a disrespectful joke about a life changing injury you received.
To make it even worse, it gives the media an opportunity to drag the story on even longer. I know we all hate how the media are still writing stories and damaging towers further, but by doing something like this, people are practically writing it for them. Absolutely disgusting.