He heard enough from the Potters’ whining, how it hurt that their son had abandoned and betrayed them. Arthur had discussed it with Muriel and she agreed that the Potters were hypocrites, because what about their betrayal? They left the boy in an abusive environment and were now talking about, how their son had betrayed them out of spite and jealousy, but thankfully, Alastor "Mad-Eye’ Moody pointed out that since he lived in the muggle world, how would he know about them and John’s status as the boy-who-lived. Both were infuriated and instantly shut up. They didn’t like it that it was pointed out that Akira was really clueless.