The best thing I see about this idea is the possibility of creating nuclear energy in a more granular temporality and budget.

Instead of spending 26b$ and 10 years in one big reactor, we can spend a quarter of that money and time in these smaller reactors. If we see the need to keep expanding nuclear power, we could do so very easily while we would be able to see the benefit of each project in just a few years. A big grid of these would be just the same as multiple big reactors, no extra difficulty is added, but you can expand it at will in small increments that are doable within one democratic term (oh god, that’s so important nowadays!).