There’s a current disagreement about radiation dosing policy right now, too. One side things the current approach is fine, the other believes that we are so overly conservative that we are wasting a lot of resources avoiding doses that are inconsequential. This is most relevant if we want to build and operate more nuclear reactors (e.g. for power), but it might also change some x-ray practices.
But, there are few things that are absolutely safe. You can slip, fall, and die in the shower; you can “poison” yourself by drinking too much water. When a medical professional requests an x-ray, they believe the risk is worth the reward.
Well, I think the general public probably is a bit confused about that. But, I think the disagreement is on the exposure of workers, and the practices around that.
IIRC, nuclear reactors for power have surprisingly high operating costs, even tho the fuel costs are quite low, and most of those costs are radiation controls. (And, no one is saying we need to eliminate controls, just dial them back a bit based on better science of how radiation affects humans.)