I truly do not understand the fixation with hydrogen as a fuel. Compressing H2 to store it requires around half of the total energy that you can expect to get from its final application. Add in production losses and the difficulty in storage and handing, its always much worse than batteries. I can see the argument for use in industrial processes like steel manufacturing as a reducing agent, but not as a power source.
Not everything is about "muh EV".
There is a reason that countries that have built significant Solar PV and Wind Turbine manufacturing capacity like China, Germany, SK, Japan, and India have also been investing in H2.
H2 as an energy market helps subsidize additional H2 usecases such as Ammonia/NH3 production for fertilizers (this has become critical due to the ongoing Iran War), steelmaking via H2 direct reduced/sponge iron, and (for China and India) coal gasification.
Additionally, REEs and critical minerals have increasingly become a bottleneck so additional options is good to have depending on the country, which is a major reason Japan heavily invested in hydrogen along with sodium solid state battery R&D.
And finally, the brutal truth is no major country actually cares about climate change - they care about energy security. Most larger countries have the ability to afford the externalities that arise from climate change, the three largest CO2 emitters in the world (China, US, India) are seeing CO2 emissions rise (mind you at a reduced rate, but still unsustainable from a climate change perspective), and in China and India's case continue to leverage coal as an energy security tool especially after the Iran War supply chain crisis highlighted the criticality of coal gasification for the fertilizers and agriculture.