Renewables are replacing coal and nuclear simultaneously. Coal usage was consistently dropping before and continued to consistently drop after the nuclear phase out.

I agree if coal was banned before nuclear, the new renewable capcacity added could have done more to replace a huge source of emissions faster. It was a failure of education, media, and political will that Germany phased out nuclear before coal.

That does not however mean that coal usage increased after nuclear was phased out, such a claim is just false.