This has historical precedent. Many plants were built in such time scales. About a quarter of them shut down early or destroyed themselves because they were so unreliable, the rest generated electricity less frequently and with more correlated outage than a wind turbine.

China is the only exception, but they still take 4-8x as long to build a nuclear plant compared to a wind farm, it's just that both take less time.

I bet those nuclear power plants would be less safe. Much "bureaucracy" is there for a reason