I don’t mean to diminish your point about the utility of nuclear, but (a) it’s subject to the same ramping up/scaling issues as anything else*, and (b) you’d be surprised how quickly we could ramp up manufacturing of renewables if The Powers That Be actually wanted to.

(* Or worse: in particular, the absolute debacle that was Plant Vogtle 3 and 4 – delivered years late and billions overbudget, while bankrupting Westinghouse in the process – shows that we definitely did not maintain our nuclear expertise over the past several decades of building exactly fuck-all new plants.)