I've posted the same. It was your other idea that it was electrical forces were not involved that was errant.
If I gave the impression that I thought electrical forces "were not involved", then I apologize. CERTAINLY they provide some small fraction of the energy, but by far the largest part is provided by the disappearance of mass, which energy appears as velocity of the fission fragments.
"Moonman"'s assertion was that all the energy release was provided ONLY by that electrostatic repulsion.