Why not just store excess renewable electricity that way, local to wherever that power is being generated in underground pressure vessels or something, venting the oxygen produced to the atmosphere? Then when the wind isn't blowing, or sun isn't shining, burn the hydrogen to run something resembling a conventional natural gas generator... Don't bother transporting this stuff anywhere, produce it onsite, burn it onsite. Couldn't you also capture the exhaust of the hydrogen combustion to recharge the input electrolysis water?
There are also (probably) a lot of costs involved with trying to contain the hydrogen, and making and industrial sized fuel cells. Maybe quite a few unsolved problems as well e.g. do fuel cells eventually wear our like batteries?
Basically, we could do it, but the current techniques are possibly more expensive and too lossy compared to other options, like molten salt, pumped hydro etc.
The platinum catalyst is expensive, and as others point out, you need special piping for hydrogen.
More promising is direct ammonia synthesis: https://www.chemistryworld.com/features/ammonia-synthesis-go...
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.