I think the cause may be that Egypt might have been ruled originally as a matriarchy with the male members slowly enlarging their influence resulting in this compromise.
Sein Ekel und Spott gehen soweit, dass er vorschlägt, sich Masken aufzusetzen, bevor man ehrlich miteinander rede.
He writes in On Anger 3.
Regardless of whether or not he was involved, though, he was certainly not standing there when Caligula was actually murdered.