What?
Coal plants are the ones that produce radioactive smog. Nuclear plants just put off steam. The radioactive material doesn't come into contact with the clean water loop that is used to spin the turbine and generate power unless something is catastrophically wrong.
The dangerous byproduct, spent fuel rods, are stored in pools buried deep, and radioactivity is drastically abetted by the spent rods being submerged in water.
Seriously, you anti nuclear people are like anti vaxxers. It's very minimal reading to learn how this shit works so that you can have valid critique, but no, that's too tough.
A good chunk of the world is still stuck where the options are coal vs nuclear for base load coverage. Of course people are going to push for the safest option for large load needs.
We're generations away from worldwide energy needs being met entirely by green renewables and battery banks. I'll never be against expansion of those technologies, but nuclear is an important middle step that is far less dangerous than the most widely used technologies for meeting base load (coal).
Don't let the perfect be the enemy of the good.