This theory has been around for quite a while.
Life on Earth evolved with high levels of radiation. Lot higher then now.
We have to have a natural protection/adjustment for it, otherwise we would be toast a long time ago.
The linear theory came from Hiroshima studies, where there extrapolated their observations to ridiculously low levels.
Since then they are, I think, scared of lawsuits, and overly cautious, so they push this idiocy “just in case”.
It the greeneys really wanted clean energy every state would have the number of reactors required to produce the electricity they needed.
Instead it’s all just another money grabbing scam. Windmills and solar panels! 🤦🏻♂️🤦🏻♂️