You’re making the bet that we can stop climate change without changing our lifestyle. The very best we can hope to achieve that way is kicking the can down the road. And this mindset brought us to where we are now. I have a hunch that this is not the best strategy.
But let’s got with that, and see what happens.
Let’s assume that we solve the problem of extracting uranium from seawater, and that this is would be a process that compares a negligible amount of waste, not compared to coal, but also compared to renewables. We’d have all the fuel for nuclear power plants we need for a long time, even without breeders.
Now you start building nuclear reactors all over the world, so that everyone can start wasting energy like the US does (~12.000kWh/year per capita, i.e. ~1.5kWh per hour). Maybe using nuclear power would reduce the overhead of extracting and processing carbon based fuel, but that would be offset pretty quickly by the fact that that our lifestyle involves that energy consumption increases.
Let’s further assume that the average reactor has an output to 5 MW, so it would provide energy for around 3 million people.
In that case we’d need to build ~2.5 Million nuclear reactors all over the world. Currently we have ~450.
A massive undertaking, that would take years - after we solved the problem of fuel, because before that the US will start wars to control as much of the cheap uranium as possible as soon as they divert from fossil fuel towards nuclear power.
And we’d have to build more plants soon after, because our lifestyle is one of increasing consumption.
If the state in the US is anything similar to the state in Europe, you have all sorts of problems in those reactors, some of which are properly reported, others are not, and all are “no cause for concern or a rest to safety”, of course. I’m talking about France and Germany here mostly, which should have a pretty high standard. However, in fact, that standard is not sufficient in my book.
Now you start building these reactors in Iran, Irak, Afghanistan, Cuba, sub-saharan Africa AND try to maintain that standard. Good luck with that. Is that still “one of those risks we need to take”?
You asked what public luxury means, private sufficiency: we share commodities that take a lot of energy to produce, and reduce what is privately owned to the essentials.
Yes, for that we’d need to redistribute most of the wealth. As you put it, that is merely a political problem. And does not look so daunting when you compare it to building 2.000.000 nuclear power plants and then running them in a safe way.