H2 is complimentary to batteries. You can discharge battery capacity that will recharge to full the next day. It's affordable enough to make already, and as a fuel, is tradeable/exportable power. Making H2 is needed to support more renewables so that surpluses aren't wasted.

Making H2 just doesn't stop you from using BEVs today or tomorrow. Faster charging for more range using a fuel that was made when, and priced because, it was conveniently sunny.

The world can get there without the US, and energy sabotage was always a GOP magnet. But anti-H2 sentiment, based on genuine disinformation, but ok perhaps overhyped Toyota prototypes prior to infrastructure maturity, has made adoption/progress slower, if only because renewables adoption has been slower than what was possible.