Ionizing radiation is not selective about which molecular bonds get hit and broken up. There is no way to deal with the potentiality resulting billions of diff

Ionizing radiation is not selective about which molecular bonds get hit and broken up. There is no way to deal with the potentiality resulting billions of different molecules and their effects (the order of magnitude is probably way to low). It is the same thing with transmutations caused by neutron radiation. If the proton count of the atom changes, the moecule that it is part of has to change as well. Again, there is no way to counter all the possible results of this process. And finally, even if we countered the effect in humans, the wildlife would be similarly exposed, but without any treatment to counter the effects. Directly fission powered airplanes are simply a pipe dream.