Since the levelized cost of new nuclear is 3-4x that of renewables, how could what you write there possibly be true?

Hydrogen, in fact, if made by electrolysis from renewable energy, would be the final nail in the coffin for nuclear. That's because it would destroy the last, desperate argument the nuclear fans are making: that renewables cannot reach 100% due to occasional long windless/cloudy periods, and that batteries to tide over those periods would be too expensive. Batteries would be too expensive, but hydrogen burning turbines would not be.