Earlier quoted context omitted.
The reasons are political… just like in the United States. HBO with their Chernobyl miniseries single-handedly undid years of progress in the perception of nuclear energy.
Or perhaps the reasons are economical. Recently nuclear construction projects became a lot more expensive and took a lot longer than initially planned.
For example, because everyone is terrified of nuclear, regulations may require an absurd level of safety expenses that no other energy producer is burdened with. If the political climate lead to burdening fossil fuel burners with costs to reduce their pollution and GHG emissions that directly and indirectly lead to orders of magnitude more deaths than nuclear ever has, then nuclear might actually be price competitive.
As another example, since the Nuclear Regulatory Commission in the US started in 1975, they have never, not once, approved the construction of a new nuclear site in the US. They've approved expansion of existing sites, but never a new one. In fact, it was a huge deal when the NRC approved the expansion of a site several years ago, for the first time in 30 years, https://www.reuters.com/article/us-usa-nuclear-license/nrc-a...
How much pain and death is the NRC ultimately responsible for for holding nuclear energy to such a high safety standard that it's been literally impossible to build a new site for almost 50 years? Because all that means, is that we've burned drastically more fossil fuel than necessary over the past 50 years.
Shame on the NRC and the US government for using irrational fear to protect the fossil fuel industry at the expense of nuclear energy. And shame on environmentalists for falling for the same trap and failing to think holistically and systemically.