> We need nuclear to meet baseload because the storage requirements (for PV particularly, by far the largest renewable) would be absurd without it.

This is not true. With a properly designed solar/wind/battery/hydrogen system, a steady stream of power can be delivered more cheaply than what you could get from a new nuclear reactor.

This wasn't true even ten years ago, but it's true now, and many (such as yourself) have not updated your priors.