> Of course nuclear is much more complex as a whole, because it comes with at least two, sometimes three different business sections attached by default: Production and sale of rare isotopes, on-site laboratories and research and recycling of spent fuel.

That misses my point. Managing fuel and waste is more complex for nuclear. Producing heat using a nuclear reactor is more complex than producing it with coal and gas. And extracting useful energy from the heat is also more complex (given the low-grade heat that reactors provide).

At every step of the way you have more complexity in engineering and operations.

These engineering realities are independent of the regulatory environment or other activities occurring around the plant.