The article ends by pointing out the author has no data on whether hydrogen cars are more dangerous than others. Nobody would argue hydrogen can't be dangerous. The question is, is it more dangerous than jet fuel?
Jet fuel is closer to diesel than to gasoline the activation energy for jet fuel is much higher than for hydrogen, its molecules are larger so it can be contained safer and with less chance of leaks. So the answer is yes, it very likely is much more dangerous than jet fuel.
