> People routinely get exposed to that during their normal job.

What jobs you're referring to? Your examples cite years and months but the quoted sentence states "in an hour."

It's all sort-of fine until someone brings it home and sticks it on a shelf and thereby kills their entire family. Walking around with this in your pocket will kill you eventually.

This sort of thing has happened before with loose radioactive sources.

To back up your point: If "X-ray" is a chest x-ray, then per https://xkcd.com/radiation/ this would be equivalent to one-tenth of a head CT scan, which are routinely done without consideration to any increased risk of cancer.

If the goal is to minimize loss of life, I think there are far better things that time could be spent on than looking for this thing. People are bad at thinking about opportunity cost.

You're bad at arithmetic, that's 100 boxes on the XKCD chart, so it's one-hundredth of a head CT scan, and the medics might not tell you they considered increased risk, but if they actually didn't consider it they're incompetent, that's a non-trivial effect.