I don't think that's an accurate depiction of NRC for builds like at Georgia's Vogtle. Even in California, entire reactors have been installed backwards and the regulatory problems were not the big problem.

Given that France's builds in both Finland and France itself have been similarly disastrous as the US builds, I don't think the NRC seems to be the likely cause. And France is much better at building big things than the US is, their infrastructure costs are a fraction of US costs. IMHO there's something deeper to the lack of success of nuclear as a technology. It's a mainframe trying to compete in the cloud era.