It’s not irrational. Nuclear isn’t that compatible with renewables because it is bad at load following (technical and economically even worse).

Further nuclear likely comes with catastrophes like Fukushima every few decades and the problem of nuclear waste (just calculate what posting a single person to watch it for a million years costs). Germany suffers from Chernobyl to this day with mushrooms and game being contaminated with radionuclides above legal limits.

Germany has managed to reduce both fossil fuel use in total as well as coal use for electricity while shutting down nuclear (https://commons.m.wikimedia.org/wiki/File:Energiemix_Deutsch...). Nuclear now being shut down we can expect faster shutdown of coal plants.

its not specific to germany, they just happen to be doing it on this specific issue

the current times have made the optics even crisper