I'd take your point if French were massively (like 90%) in favor of more nuclear, and saw it as their main energy source for the future centuries. That's definitely not the case [exit: a poll mandated from a nuclear power organisation puts it at 50% of people seeing nuclear plants as a positive asset for the country:

https://www.ouest-france.fr/environnement/nucleaire/sondage-... ]

You can then think what you want of the French people and why they could be dead wrong for not thinking like you, but it's another debate: they'll still want to get out of it if given the time/choice.