Hardly an odd fear when adding new systematic components to the material supply chain massively increases the chance of some of that supply leaking.
Not doing that route makes you less exposed to risk.
In an extremely complex world where risk needs to be minimized as much as possible, it's totally reasonable for society to decide not to extract plutonium at mass scale in a free market way.
Sure if the military controlled the whole thing (as they do via their own supply chain) that could perhaps feel more secure... but who controls outflows of waste between governments, etc?
Not doing that route makes you less exposed to risk.
In an extremely complex world where risk needs to be minimized as much as possible, it's totally reasonable for society to decide not to extract plutonium at mass scale in a free market way.
Sure if the military controlled the whole thing (as they do via their own supply chain) that could perhaps feel more secure... but who controls outflows of waste between governments, etc?