Furthermore, considering Yoshifusa's post as Chunagon at the time; the sixth highest rank in the Daijokan (Grand Council of State), it is impossible for him to cause such an incident alone (notably, Yoshifusa expulsed two senior people) by taking a leading role, even if he was famous as an able person.
切れ者とはいえ当時中納言で太政官での序列が第6位でしかなかった良房ひとりが中心となってこのような事件を起こす（しかも上位者2人の排斥を含む）ことは不可能であった。