Maybe this is just my Silicon Valley-centric, rarefied group, but I have genuinely never met a rabid environmentalist hell-bent on shutting down nuclear power.

Maybe this is just my Silicon Valley-centric, rarefied group, but I have genuinely never met a rabid environmentalist hell-bent on shutting down nuclear power. I know many environmentalists, including career activists. The worst they could be accused of is not making nuclear power their number one priority. But, abstractly at least, they all support increased nuclear power in principle. I know many people against nuclear power. They, however, don't have many political or scientific beliefs, and their intelligences lie elsewhere than scientific or conceptual thinking. None would identify as green or environmentalist. The biggest problems with nuclear power seems to be (a) the inertia of leftover regulations and bad vibes from the 60s-80s and (b) nuclear power is really, really expensive and requires a great deal of capital outlay and time to build and even to recover the energy costs of building it. People are also more sensitive to the worst case failure modes of a nuclear plant (which has happened like once in history) than they are to the failure modes of coal power (which are when they function like they're designed to).