All of those were caused by human mistake. But this does not mean that they must be discarded. Because human mistake happens. If it is with a solar panel, it's inconsequential. Not with a nuclear reactor. So yes, it is an issue to consider, but in truth all it means is that we have to be VERY careful
If it is so that a human mistake can cause a big number of casualties and massive environmental damage it is far from safe, even if you are very careful.