Nuclear investments desperately need to be recognized as green so you don't have oxymoronic policies similar to Germany's current plan where you're decommissioning nuclear to become more "green" yet producing much more carbon dioxide.
What Germany did was very quickly turn off all nuclear power plants without any plans on replacing them with sustainable alternatives. Now they're offline, what's done is done. France still has nuclear power plants, and they're really pushing for nuclear energy to be considered green. This is about investing and creating incentives. So IMHO Germany shouldn't build new plants and France shouldn't get EU funding for th…
We won't have many euros left if we need to fight climate change effects while we wait for new technologies. We need to use the technology we already have. In addition to that, in parallel, we also need to find enough land owners that are willing to have a wind turbine in their proverbial back yard. And in parallel install solar panels on available surfaces. And introduce (pumped, battery, etc.) energy storage. We need all of it.
Renewables don't have a money problem, it's a political and humanitarian problem. It literally costs money to have money (ask your bank), so the big money owners want to invest it. It's well known that solar panels and wind turbines pay for itself easily and are very low risk (lower even than an index fund if you operate more than a single device).
Nuclear isn't so simple, but has unique advantages. We don't have the luxury to play politics around whether nuclear is renewable or not, it's low on greenhouse gases and doesn't require a lot of land per MWh. No point delaying further while we debate for another five years about whether we should really fund this not-truly-renewable technology.
For gas, I mostly agree with you because that's an ongoing emission source with much higher greenhouse gas emissions. Building new gas plants isn't going to get us very far (even if its merits vs. alternatives need to be weighed on a case-by-case basis).
But nuclear is different from gas: it's a calculable emission source for the initial construction, and over its lifetime will be orders of magnitude lower, in the same ballpark as wind and hydro.
I'd love to go with only truly renewable sources (not that "renewables" like wind and solar have renewable or long-lived hardware, but it's a good start). I just don't see that as an option in densely populated western Europe. I'm happy that the EU looks at merits here rather than ideologies.