Moral degradation propagates into technical issues. Like the problems Boeing is having now. In turns out "traditional" values like family and religion is really good for focus, memory, goals, and an overall good person, or you know just not doing unhuman things.
The issues holding back nuclear power in the West are political and ideological. Ideological are the funniest ones, since in the goal to lower carbon footprint, they instead transfer power generation from no footprint nuclear to high footprint gas, and the dirtiest of all - coal.
Building leading edge foundries in Taiwan will continue to face this issue.
As far as technological issues, it's all just down to engineering. Physical principles have all been solved on the theoretical.
Even a country as broke as Russia, since 1990s, has been able to complete Gen 4 prototypes, operate them on experimental bases and is finally near completion of commercial level. This was just on basis of their technology level from 1980s and minimum additional investment.
China, OTOH, wasn't even on the map, had no commercial nuclear power plants just ~35 years ago, has caught up or even overtaken Russia.
Even France, which is operating one of the largest fleets of nuclear plants has mostly stopped investment in new generations of nuclear power plants.
Features that Gen 4 offers are:
- safety: you can disconnect it from power and from human operators and it will safely shut itself down, on its own, in case of accident
- efficiency: instead of ~5% energy extracted by current nuclear power plants, it can extract up to ~95% of energy, by using fast breeding reactors and fuel reprocessing
- nuclear waste: because of how well it burns the energy, the amount waste that is left over is less, and degrades in terms of years and decades, rather than 1000s of years
- existing stockpiles of nuclear waste: these plants can re-use this spent fuel. There are tons of this spent fuel around the world, and it can be reused, unlocking the remaining ~90% of its energy. Which can in turn reduce the need for new uranium mining.