Definitely not irrelevant. There are trade offs... good energy density for sure but you deal with storing radioactive waste. Your own source discusses that.... it's a necessary step to deal with a much worse climate condition.

"We conclude that nuclear energy — despite posing several challenges, as do all energy sources (ref. 7) — needs to be retained and significantly expanded in order to avoid or minimize the devastating impacts of unabated climate change and air pollution caused by fossil fuel burning."