However if you just mean not building new ones that it really seems like you do not. New renewables go up fast, and they are operational essentially immediately.
Renewables are increasing becoming delayed through court actions just like nuclear. We’ve had a wind project off of Massachusetts delayed over a decade. Some of it is NIMBY. Some of it is environmentalist, a local solar project prevented because it would destroy habitat belonging to some endangered critter.
The point is building nuclear and renewables displaces fossil fuel faster. Again, avoiding nuclear does nothing other than prolong fossil fuel use. Also, some newer reactor designs have an important secondary role. They can consume some of our store nuclear waste as fuel. That would be an important cleanup, avoid long term storage expenses we still have not figured out.
As we increase electrification of our economy and daily lives we are going to have increasing demand. Southern california is already struggling to meet current demand. Brownouts increasingly common during the summer. If the state achieved its goal of mandating EVs things would get far worse wrt demand.
Reality is that EV adoption will not be as fast as California wants. And renewable plant buildouts will not be as fast as advocates hope. And battery and other storage solutions will bot appear as fast as advocates desire. And this means we will just continue building more natural gas plants to backup renewables. We should be build nuclear, demand is going to be increasing for decades.
Carbon neutral fuels are interesting, although I tend to think of aviation fuel first. Special cases.
The contrast between nuclear and coal is on point, because the US has an outstanding safety record. Coal has literally released more radiation in the USA. That's a point that most people are unaware of...
Regardless of Hollywood context though, it's pretty much undeniable that what the original poster said about the catastrophic nature of something going wrong is correct.
Not quite, newer reactor designs are far safer. Some failure scenarios of the past no longer possible.
There is, in fact 880 tons of what they are calling corium barely kept cool by constant pumping of water underground in Fukushima right now.
Negligent operations that (1) can be addressed by regulation and oversight, if (2) not avoided by using newer designs. If southern california we have a coastal reactor. It could conceivably lose power for cooling. Besides onsite backup generators, additional mobule backup generators are stored on a nearby UIS Marine Corps base. The Marines have ample heavy air lift capability to deliver these backup if needed. But again, newer designs can avoid the failure mode in the first place.
As for SMRs specifically, my concerns boil down to economies of scale and essentially the square cube law. Everything suggests that SMRs produce less power per unit of pretty much everything involved.
Again, we are talking about complementing renewables, not displacing them. The SMRs would still be able to provide backup when renewables are not operational. We have not really solved the storage problem. We are still building natural gas plants. SMRs could displace these gas plants.
Let's not forget that the anti-nuclear stance of Greenpeace was mostly about nuclear weapons and nuclear weapons testing.
The 1960s/70s Green movement, including greenpeace pretty much lumped in nuclear power with nuclear weapons. Greenpeace vigorously opposed it all.
Basically at present, nuclear is pretty much doomed to be relegated mostly to niches for the foreseeable future because there seem to be better alternatives.
And I expect we will continue building natural gas plants as renewables and storage tech do not deliver as hoped, as demand massively increases as we increasingly electrify.