Notable success would be what was promised in the 50s. Energy so abundant that it's not metered. Doing to coal what coal did to wood. I don't think you should judge renewables on the same terms. These are much younger projects, at scale.

Seizing defeat is fair, perhaps. Nuclear has been on the cusp for too long. "Marginally better than coal/gas" is not the notable success we were promised. I'm willing to cut losses, if that's all that is at risk.

I'm not saying that nuclear's first principles advantages will never materialize. They will eventually. I just wouldn't be betting on nuclear now.