The anti-nuclear position in Germany is very old, and core to the existence of Greenpeace and green parties on DACH region (down to firing RPGs at reactors).
Does Russia benefit and probably fund it? Sure.
But DACH environmentalism grew from antinuclear protests, not the other way around, and thus will boycott nuclear even when it goes against their modern stated goals.
It would be good if we could modernize our grid to support easier exchange of power from north to south and vise versa.