As a former truck driver, H2 is probably the most practical from a long-haul perspective.
H_2 is also the only clean solution for certain forms of transportation, e.g., cargo shipping, air transportation, substitution of diesel trains and likely even heavy duty trucks. So we will need some form of clean H_2 if we want to make a clean transition in those areas.
H_2 is not the devil, we must steer away from so called Blue Hydrogen (and worse forms of H_2 production). But Green Hydrogen is very likely part of the solution. At least I don't see other way out.
With that said, nuclear cannot solve the issues mentioned. It's great for base-load but not great to handle renewable energy variability. For that we nowadays use thermal power stations that burn fossil fuels and can be turned on and off easier.
So I agree on nuclear being part of a clean energetic mix but it can't fix the problems mentioned in the post above.