Fusion just replaces the radioactive bit, you still need steam/electricity conversion/transmission/cooling... it's not like a suitcase you can plug wires into, you still need a massive 'factory' to make electricity, just the one bit is a safer.
Also, nuclear fusion is possibly the cleanest energy source we could get. If we touch this, we might have a real path forward.
Furthermore, not only was solar power borderline non existent when those reactors were built, it is also still intermittent. You are just glossing over the biggest challenge of energy - balancing the powe grid. No-one needs energy if it's only avaliable at the wrong time. Energy storage multiplies cost of renewable electriciry several times over, and no country-scale grid has ever operated on wind and solar.
Lastly, energy is actually cheap - you can see that because we can afford transporting a pair of jeans 4 times across the world in the process of manufacture. We could have had zero-carbon grid since the 70s with nuclear - and France did. Even though France has cheapest energy in EU, suppose energy would be 30% more expensive. So what? We would be so much better off in terms of climate change.
Fission’s primary form of shielding is generally large pools of water or other coolant which don’t directly become radioactive. Fusion on the other hand needs to maintain a near vacuum so your pressure vessel is under heavy neutron bombardment. However, small amounts of radioactive materials get dissolved in the fission’s water which the goes on to contaminate the primary coolant loop which increased decommissioning costs. Fusion reactors primarily containment vessels becomes extremely radioactive and all the remote handling equipment also needs decontamination, but it’s unclear if the primary coolant loop will need similar types of decontamination.
And by small amounts, divers occasionally go in the same pools storing years of spent fuel rods. https://en.wikipedia.org/wiki/Spent_fuel_pool
Running the numbers the real difference is fission reactors need more protection from the outside world and containment for a potential meltdown. Thus thick though still fairly cheap walls, which generally don’t become radioactive. They last for 50 years and don’t actually cost that much to construct. Fusion however is a vastly more complex device which will also increase construction and decommissioning costs.
It would help to actually watch the presentations. They’ve solved a lot engineering problems from Routine maintenance to blanket Renewal.
One failure of Banqiao Dam killed an estimated 240,000 people. That's more than all people who have ever died from anything to do with nuclear, reactors and bombs combined.
Air pollution kills about 2,000 people every single day.
Reactor incidents are like plane crashes - they get attention. Fissil fuels are like car crashes - they kill more people every day and noone gives a shit.
That’s a significant percentage of total reactors ever built including what was considered a safe design. We could go 1000 years without another incident, but from an insurance standpoint what would you charge a new power plant next to NYC? That means you need them in an a less expensive area, but everyone feels their area is valuable. That causes vast NIMBY issues and heavy regulation.
In theory modern Nuclear should cost less and be both clean and safe, but people gonna people both inside and outside the industry.
It is true that today's reactor designs are much safer than RBMK, but I will prefer the reactor can can't go supercritical to one that can any day, especially if it's nearby.
