Nuclear is fine with load following. Most plants run as baseload because it makes sense for them to do so, given the surrounding energy mixture and capital cost

Nuclear is fine with load following. Most plants run as baseload because it makes sense for them to do so, given the surrounding energy mixture and capital costs, etc, but it's not some sort of immutable law of the technology. Many existing designs have that capability even if it's not used much. They're not great for peak generation, but if you're price insensitive, or could lower the capital costs enough for it to make sense, they could do that too.