To the contrary, nuclear contamination can be cleaned up. Fukushima's exclusion zone was completely lifted after 11 years [1]. Pripyat was a planned city, built for the specific purpose of supporting the Chernobyl plant and it's workers. It remains unremediated because there's no incentive to clean it up, not because. Nuclear power has a smaller death toll per megawatt hour than wind, orders of magnitude less than hydropower and biomass [2].

1. https://www.cnn.com/2022/08/30/asia/futaba-fukushima-nuclear...

2. https://ourworldindata.org/grapher/death-rates-from-energy-p...