This strikes me as a ridiculous idea. The effort involved to suck moisture out of desert air, then convert to hydrogen, seems pointless. Solar panels generate electricity, so use that.
I think this is a grant-raising exercise. Transporting hydrogen? What an expensive idea.

Dew traps for harvesting water for drinking and irrigation isn't unheard of but is normally reliant on coastal breezes and moist air, how it can be more efficient in an arid areas is a bit of a puzzler

Hope they did a bio assay, there's a lot of life going on in apparently empty desert. And that needs water.

Aha, the Devil's Marbles, N.T., Australia. I have a photograph of me in 1972 trying to dislodge the right hand stone. I didn't succeed due to a lack of spinach. But during the wet season it does get very humid there, so extracting water from the atmosphere is not completely insane. But transporting the hydrogen from this sparsely-populated region in the dead-heart of Australia is.

To see a working system on the way to practise: https://aquahara.com/

windykites: Yes,hydrogen as an energy storage technology refuses to die. It is a grossly inefficient way to capture renewable energy. Better to store the solar panel output in batteries.

This sounds like it might end up filed under the too good to be true category. Electrolysis seems like a huge waste of electricity and water in an area that needs both.

Such a lame idea and a waste of perfectly good solar energy. Use the water to drink. Use the solar to power things or to store in batteries. Hydrogen is not the solution to any of today's problems.

More proof that hydrogen will never be an energy source, and today its not even an energy currency as the exchange rate is way too poor. Maybe someday there will be an even trade of converting some other energy to hydrogen and back again, but for now, Hydrogen is NOT a source of energy and not even a practical currency.

It may be an environmental issue to remove moisture from the air in a location that is already dry. It's also a pretty expensive process to generate fuel for export, particularly when competition arises in areas with lower costs.