...what's a few hundred billion more to further entrench fossil fuels?
Hydrogen is not now, and never was, on this planet, a source of primary energy. Thus every hydrogen scam advertised here and elsewhere serves the interest of the fossil fuel industry.
It is absolutely obscene.
As advertising, it has this precise quality:

Just because the fossil fuel industry's advertising to greenwash itself as "hydrogen" has been spectacularly successful at convincing the public to embrace stupidity, the laws of thermodynamics will not change.
Storing energy wastes energy. It's a law of physics against which the laws of marketing have no effect. This particular advertising relies on a law of marketing that is know as the Bandwagon fallacy, the lie that if something is popular it is also good.
In a time of the collapse of the planetary atmosphere, this isn't merely bad; it's evil. There are 1.5 billion people on this planet who lack access to improved sanitation. Imagine, if instead of genuflecting on a scale of more than 100 billion dollars to dishonest advertising by the fossil fuel industry to rebrand fossil fuels as "hydrogen," the largest construction project on the planet was building sanitation systems for those who lack it.
It's disgusting.