How do YECs explain why there are no short-lived radioisotopes found in nature?

The postulated acceleration in the radioactive decay rate also poses another anomoly. Why does radiometric dating of moon rocks and meteorites also produce datings as old as more than 4 billion years and no mention of the presence of shortlived isotopes that I am aware of? Have they been subjected to the same postulated (extremely) accelerated decay rate? If god's purpose in accelerating the decay rate was to generate the additional heat to cause the flood and incidentally(?) initiate the breakup of Pangea, why would he also accelerate decay on the moon and in meteors?