But radiation is very easy to measure. Coal pollution on the other hand is not.
So people have an inflated fear of radiation simply because it's so hard to measure.
It reminds me of how when Israel detected Polio in sewage, people said Israel is one of those countries with endemic Polio. Except other countries aren't even checking their sewage.
"We detected <tiny amount> of radiation from Fukushima in seawater, oh no!"
I've seen this many times: People notice when you measure some dangerous thing, and avoid it, while being completely blind to the fact that other dangerous things they do are not measured, so they think they are safe.
No one measured how much coal pollution was in sea water, so coal pollution is clearly safe, right?