> Therefore the only cost estimate we can rely on is what we have actually managed thus far.
Correct. And we've managed to bring the cost of nuclear down to 1-2 billion dollars per GW when building plants at scale [1]. This was done during the late 60s and early 70s when we built lots of nuclear plants at once [2].
> These results show that there is no single or intrinsic learning rate that we should expect for nuclear power technology, nor an expected cost trend.
Your first link. Second link is invalid for me.