I write a lot about hydrogen economy, but yet to see much positive acknowledgement of it, but it's cool you mention hydrogen, it's key to many things that we can't see until we start seeing the energy supply problem in multidisciplinary terms, converting money also to energy, and recognising more energy flows by money than by any other means.
This is standard formal systems Engineering methodology, but we vary rarely see it applied to what is almost instantly recognised as a global energy problem, not just a climate problem, it's actually much more complex than can be seen without multisciplinary thinking, but there is a very simple solution, needed to incentivise the move of all people and all business to a solar hydrogen economy, which is needed to keep aerospace airborne, as well as everyone constantly powered by the geographically distributed intermittent energy of the sun, it's solar indexed stimulus, which also is needed to just keep the value in money whilst we are moving naturally to the energy of the sun.
This is something I've been studying and writing about for seven years now as a multidisciplinary model based systems Engineer, since I saw it coming during PhD work.
A major physical barrier in the way of moving all to solar is profit.
Its not possible to supply energy from solar at profit, physically impossible, and we end up in an echo chamber when we point out profit has to end, to make the switch from the energy of the planet to the energy of the sun.
I suspect Nikola Tesla might have been the first to find themselves in this echo chamber.
Its a fiendish problem, the deeper we dig into it, the more it starts to look actually supernatural, there are superhuman intelligences involved, but not the kind surmised by conspiracy theorists, there is such a thing as an emergent property associated with us which is superhuman intelligence with its own drive and motivation actually controlling us, to do what we do, and we are only starting to understand this due to the arrive of an oppositely powered emergent property, which is ChatGPT. which is solar powered, living in its own "Money-Fuel Tree" demonstrating and even explaining to us the power of solar - it talks!
Personally I am in two minds about P2X, because there seems no understanding of any of the problem of profit, the P2X expo looks very profit driven with obvious oil interests there also, I think this does the reputation of hydrogen much more damage than most realise, the whole business of renewables, carbon capture etc, is a for-profit scam, imho, unfortunately.