That may be true, but that's orthogonal to the entirely home-made problems Germany is facing right now. While not a complete solution, using the remaining nuclear plants is an obvious stopgap measure to at least alleviate those problems in the short term.
France's issues with nuclear are long lasting. They are running only 24 out of 56 power plants today and a lot of that outage is ongoing for many months. France is a net importer for almost a year I believe which is untypical for the country which normally exports cheap nuclear electricity.