He could be stubborn and bull headed and there is certain thing which his will overrides the advice of his minister, but such an occurrence is an anomaly and not a usual occasion.
For example, the Conquest War was actually supported by the majority of the ministers as they truly believed that Arrandy, that the Vermont dynasty was promised the world since that fateful victory in Vangua.
And not only that.
Arial was different than the nobles that some of the officials was accustomed with. The nobles never apologize.
But Arial did.
He accepts advice and he is not afraid to admit his own ignorance. Such trait is refreshing and for the people like Ragar, his confidence that Arial is the promised Asrana grows higher
Arial himself did not realize this change toward him.
Yes, Arial was also like this when he is in Eden.