By law, opting in to "green energy" on your personal electricity means to have a definition that excludes nuclear, so that's government steering of the market towards non-nuclear green energy. Certainly qualifies as incentive, if not downright subsidy by manipulating market forces. (I even contacted my energy provider saying I would gladly check a box if it included nuclear. They said it was out of their control)
Of course on oil lots more has been spent fighting over the resources. For a given country the cost of acquiring the resources may be more political than directly monetary. But I don't think you're defending fossil fuels, so I probably don't need to argue that being controlled by Russia has a cost.
Now, if nuclear is not economical as base load, I'd like to see a comparison with solar & wind for base load compared to nuclear. And it should be a calculation for the (very nearly) 100% use case. So comparing like for like. The cost of wind&solar is extremely different if aiming for 90 or 99.999%.
Some Greens say "shrug, what's so bad about power outages?" (yeah, good luck with that). Some say "we'll just import in the greater European grid!" (greenwashing).
> not economically viable without significant government subsidies.
Nor is gasoline or road maintenance. I'd like to price in those externalities first.
Oh, and as for the left-ish opinion in this issue. IIRC only Greens and Communists were actually against nuclear. The big one (Social Democrats) manifesto could be summarized as "Well, we're pro-nuclear, but we know we have to give that up because we need Greens & Communists to be able to form a government". It was very transparent.