"The struggle among True Gods was supposed to be conducted in the manner of True Gods..."
This statement was not accurate.
More precisely, the True Gods referred to here almost specifically indicated faith-based Divines.
"In truth, this was a rule set by the gods after the divine warfare of millennia ago."
"The conflicts among faith-based Divines in the Segis World are, in most cases, battles of belief in the mundane world."
"This is because their existence and power are almost entirely linked to the power of faith."
"The main force of the war is each side's Believers, with Demigod Level and above rarely entering the fray personally."
"Especially in the Segis Plane!"
"As the main source of faith for the gods, the Segis Plane has seldom become the battlefield for Demigods and above."
"This is the covenant of the gods."