The performance of nuclear power must be calculated in relation to its cost and risk. And here renewable energy is more than competitive.
This is a much more reasonable argument than most.
But third and fourth-gen nuclear are excellent sources of constant energy that don’t require storage, and some of which have a tiny percentage of the waste stream of prior generations, and what waste they do produce is problematic along the lines of 400 years (as opposed to 27,000 years).
Third and fourth gen can also use the waste that’s currently being warehoused as well. So they’ll be reducing environmental impact that’s caused by the current waste stream.