Earlier quoted context omitted.
if it wasn't for France having primarily used nuclear power decades ago, Europe as a whole would be in a much much worse state when it comes to CO2 emissions. That makes it abundantly clear that nuclear needs to be a part of the mix when it comes to non-emission generating energy production.
Not sure if that still holds true nowadays with renewable energy and storage having got cheaper and cheaper.
Currently, battery grid-scale storage stores seconds.
You'd need an increase of several orders of magnitude for this to work.
Even if manufacturing costs were magically 0, the amount of lithium, copper and other materials required would be unsustainable.
It's not going to happen.