I admitted that it is an extrapolation because not every event was observed and measured. That you have to misrepresent my arguments is hurting your case. Energy release is per event, and the energy release of a single event is measureable. It is measured over time because there does not exist a device capable of instantaneous measurement and recording.
What's misrepresentation is to admit that decay energy is extrapolated and interpolated from observations over time and then claim you have observed 'per event'. Obviously you haven't and have admitted it twice now. I know it's not what you believe, but I am not misrepresenting your statements, you are.
This is much more consistent with my position that decay energy is constant over time than with your contention of extrapolating and interpolating to individual events.