I feel this is all moot. When we run out of fossil fuels and go off the energy cliff, the nuclear facilities will basically build themselves, assuming there will be anyone around that will even know how to build a nuclear reactor
The problem is that nuclear reactors can't be built fast. We've also lost a lot of the expertise to age and retirement.
Nuclear should have been a major factor in dealing with climate change. Unfortunately, we no longer have time for it to take up the slack. It will need to catch up with other renewable energy sources, we can't wait for it.