Disclaimer: I worked a nuclear shop of ex-GE folks in the 90's.
It feeds an all-too-common techno-religious obsession rather than big-picture economic and risk management for specific projects in specific locations. One of the biggest hurdles and costliest aspects of proposing nuclear projects in the US is getting insurance first for construction and then operation, and the few insurers who can cover them aren't going to underwrite risky projects. It's so much simpler and cheaper to put up solar and wind nowadays that it doesn't make any sense compared to the past when renewables were very expensive. Renewables are the path of least resistance. Centralized and distributed grid storage in various forms then becomes a bonus feature that allows for more resiliency under load and unplanned outages.