Hydrogen enthusiasts pretend like they're just months away from solving the various threats that hydrogen poses to safety. Those problems will never be solved, but it doesn't matter. The real barrier to hydrogen energy storage and transport is that we don't yet have the capacity to create hydrogen in sufficient quantity from renewable energy. As soon as that capacity issue is solved, serious people will start using hydrogen in its safer, well-understood form: liquid anhydrous ammonia. Pieces like TFA that don't mention that are just fluff.