There is a small community of scholars, across various disciplines (often found associated together regardless of discipline, or writing outside their discipline), who consistently produce papers asserting that ionizing radiation and nuclear energy present risks or harms which are, in degree and sometimes in kind, not in accord with the broader scientific consensus. In many cases these papers are severely attacked, and not rarely retracted, but they often continue to be cited.
One such researcher is Thomas Mousseau of the University of Wisconsin. Although not the lead author of this latest fusillade, he is clearly one of the major contributors. When the author of one of the works cited says “in fact our paper in no way supports the authors’ claim”, that should give you a fair gage of the quality of the research.