I guess I agree with your “should” in a world where we have infinite dollars to spend. Sadly we refuse to treat it as existential, so the dollars we have to spend are roughly fixed. In that world we live today any dollar spent on nuclear for 10 years from now isn’t spent on renewables today, so it costs us more emissions.

When we can't even get offshore wind to be built because the current Trump administration is setting the precedent of paying hundreds of million dollars to cancel good, money saving projects, while funneling reactor approval to corrupt companies that don't have the engineering chops to deliver on their promises, an "all of the above strategy" doesn't really work.

Sticking with well proven technologies, such as batteries and solar which are deployed at massive scale by profit oriented investors on the Texas grid, makes far more sense than wasting precious few dollars and approvals on pie-in-the-sky nuclear projects that never meet their promises and might not even finish construction.

Building nuclear is hard, risky, expensive, and slow, in the very best cases. It's a shitty technology unless you have zero renewable resources in your country.