nuclear base load makes sense from a pure grid engineering PoV, which i think is why it appeals to so many HN folk. Sadly, it makes no sense economically anymore, so it will probably never be built at scale.
If nuclear is ever going to be competitive it is going to have to be some kind of reactor that runs at higher temperatures with a gas turbine power set. Could be a fast breeder or HTGR or molten salt but not water cooled. Anyway it is not a bird in the hand.
For that matter, it's shocking how small the actual core is for FBRs. The capital cost of FBRs was long projected to be higher because traditionally you had to add a third cooling loop and some other systems but it is projected an sCO2 system today could be cheaper overall.
People are highly aware that we haven't fixed the problems construction new nuclear power plants, they are less aware that we've gotten much better at operating them on all the metrics from uptime to occupational radiation exposure.