The Chernobyl RBMK design is criminal, and literally so in the US, where Edward Teller made sure reactors with positive void coefficients were outlawed (one reason we don't do CANDU, although the proposed Advanced CANDU reactor addresses this). The Japanese demonstrated long before Fukushima Daiichi that they don't have a nuclear safety culture at the level they should be allowed to run serious reactors, and that incident prompted me to look at boiling water reactor designs for the first time, and I don't like them at all.
Yeah, the above is in danger of the No True Scotsman fallacy, but we have heck of a lot of counter experiences, including the pressurized water reactor worst case incident at Three Mile Island which harmed no one and was never in serious danger of doing so.
As for what you poise as a bizarre focus, every coal plant in the world is pumping out a lot of nasty stuff, they're inherently dirty, and totally cleaning them up is not in the cards. As in, right now, every day one is running, it's potentially doing harm....