France did shut down superphenix for completely ideological reasons tho.
Also stopped investing in nuclear but that was not really ideological (the nuclear buildup originated in something of a misprediction, and sadly the country didn’t really capitalise on it).
Then it had to postpone the closure of at least two reactors following the second invasion of Ukraine, and this year officially dropped the phaseout and opened the door for new builds (unlikely as they are).