> Some claim that nuclear waste repositories are perfect (0 risk), and experts disagree.

Disagreement is natural in science as well as engineering. And absolutes are not. Framing nuclear waste disposal, or in fact any enterprise, in terms of finding total agreement on total safety is not useful.

> one of the criteria is waste and renewables win hands down

In what terms are we to assess the waste? By volume, likely number of people killed over the lifetime of the waste, maximum number killed? Do we count the waste from manufacturing as well?