I am actually surprised that the article doesn't provide more examples. The article argues that the fossil fuel industry is paying the antinuclear movement and the single, one example given is a onetime payment in the 70s to start a new organization by a private person. Sure, everyone requires different levels of evidence, but I heavily doubt that you will be able to convince anyone with that one. And then the rest of the text is about how renewable are (as of 2016) so much smaller than the loss in nuclear power.