The other part missed in the hype is that hydrogen is a storage medium, not a source of energy. It's a way of transferring the pollution to a single location, but we still need a source to generate the power to strip the H from the O2.
Agreed. But consider this:
The cleanest and least environmentally damaging form of electricity generation is nuclear, especially the low-temperature unenriched uranium CANDU reactor.
Hydrogen is the cleanest burning fuel, its combustion by-product is water.
The main difficulty in nuclear generation is that nuke plants must run flat out 24/7 to be efficient and so they have to be built to supply the low demand periods while the more polluting fossile fuel plants and watershed damaging hydro plants pick up the peak demands.
So, build nuke plants to supply the peak electricity demand and use their surplus electricity during slack demand periods to produce hydrogen.