Operating at less than peak capacity doesn't make burning coal any more healthy, and doesn't make the decision to not retire them any more safety-oriented.
You still don't understand. A coal power plant that doesn't run doesn't produce harmful emissions. And at lower capacity they produce less emissions, proportionately.
And you are still lying about coal being the only replacement for nuclear.
This is a situation incompatible with a policy of increasing safety. Increasing safety means shutting down unsafe sources while keeping or rolling out safe sources, which is the opposite of the short-term trend. So the short-term policy goal was something other than safety.
And you are still lying about coal being the only replacement for nuclear.