Hydrogen for mass- or space-constrained mobility (eg bikes, automobile, aircraft) faces all the known problems with storing it inside inconvenient shapes and contending with the losses from liquification. Real Engineering has a video on this aspect (Nebula and YouTube) when compared to simply using battery-electric storage.
However, I think hydrogen could be very useful for train locomotives -- which historically had "tenders" that stored the fuel behind the prime mover -- since weight is less of a problem on traction railways. As well as any stationary applications, such as utility-scale hydrogen to time-shift electricity supply, where there may be scales-of-efficiencies to realize. Today's utility-scale battery farms are not exactly gaining any scales-of-efficiency to speak of, because they're just adding more battery cells to the grid.
A singular, massive hydrogen storage tank would be a sphere, benefitting from a favorable volume to surface area ratio, among other possibilities. And such a sphere would make better use of land by growing in height, whereas multi-storey battery farms would be fire hazards. But these are just cursory conjectures.
Where a battery bank has a hazard of starting a fire as well as being a hazard if there is fire nearby, an enormous hydrogen tank is only a hazard if there is fire nearby, but it's an explosive hazard.
How would it compare to storing enormous amounts of propane, in terms of safety only? Would the same safeguards work?
Shorter term stationary storage seems like an interesting idea, has anyone studied it out to see how effective, affordable, and efficient it is?
The hydroride site says the green bottle contains 20g hydrogen, that might make 180g water, but is still not a lot if you're thirsty.
But can 20g of Hydrogen really take a bike 60km ?
Maybe? Warning Half-asses napkin math here but there are 286 KJ in a gram of hydrogen. So that 20 grams has 5720 KJ which converted to Watt hours is 1589 Wh. From my googling hydrogen fuel cells are 40 - 60 percent efficient. So half that to 750 Wh. Which is comparable to most e-bikes rated for 20Km of range. There are some issues with hydrogen. Converting water to hydrgron is only 70-80% efficient and converting that hydrogen to electricity is 30-60 percent efficient. Compare that to li-ion battery which can be charged at close to 99%. That mean hydrogen waste so much more electricity. Which is why I'm a hydrogen hater. I much prefer putting solar energy directly into batteries instead of the converting it hydrogen and back again at great lost.
You'd have to sweat a lot for that to be a factor. Not that it is irrelevant, but humans can drink distilled water just fine. In fact, there are regions, where bottled water is almost exclusively distilled.
So as long as you don't plan to participate in the Tour de France, you'll be fine.
When hydrogen reacts with oxygen it produces pure water. Pure water is quite reactive and will leave chemical burns on your skin. The reason is that pure water will try its best to absorb minerals, etc. And your body contains a lot of minerals and other stuff. Never drink chemically pure water!
Pure water is not going to burn you and you can even drink it (though, over time, it can leach minerals from you but then again so do carbonated beverages). People buy distilled water all the time.
I think you're being a little too generous; the only use-case where I'm aware of it being optimal is rocket fuel. Trucks retain their fuel for long enough that storage and leaks become a problem unless you have impractically heavy tanks.
I think trains and excess generated wind/solar energy storage are also use cases.
I still think these strange sounding, deadend ideas (like hydrogen bikes) still have some use, because you don't know what helpful discovery might be found, even in failure to accomplish the main objective of the project.