I disagree with this thesis. Renewables are killing nuclear because renewables have no marginal fuel cost. Natural gas can always spin down dictated by grid demand, nuclear must always maintain a certain level of output; If its generation is crowded out by renewables, it must sell electricity at a loss.

Nuclear could survive even without a carbon tax on natural gas if you could find large power consumers who would sign direct PPA agreements with commercial nuclear generators (as power consumers have done with wind and solar plants), perhaps utility scale battery operators.