Strategically speaking, Europe lacks the natural resources to build renewable, wind turbines and solar panels have to be imported, most of them from Asia.

Nuclear is still a bit cheaper per Watt and less carbon intensive, as it involves less infrastructure, logistics and batteries overall. It's also somewhat more reliable, as it doesn't depend on sun or wind (the former of which France often lacks).

Also, I am hopeful that nuclear power plant construction delays will only improve in the near future, as Europe rebuilds its expertise in nuclear engineering, which it lost after the past decades of anti-nuclear waves.

Finally, I don't see fossil fuel usage going down much in Germany in the link you gave, if at all. Which is the only thing that matters, ecologically speaking.