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).

I concur. Nuclear has had seventy years to compete. Renewable is cheaper and has nowhere near the political hurdles of nuclear. Give renewables a chance to compete!