Though Hunter's actions in the comics are often questionable, the White Wolf's genuine love of both Wakanda and its people cannot be disputed. Despite the fact that Hunter was viewed with contempt by his fellow Wakandans because of his outsider origins, he did not hold that against them. In fact, he agreed with them.
His love of Wakanda led him to put his nation's safety above all else, and the most deadly threat that Wakanda faced was the threat of outside forces attacking the nation in search of its valuable mound of vibranium. This is exactly why he used the inhumane tactics that led his brother, T'Challa, to disband the Hatut Zeraze after he became king, and despite how much Hunter resented his younger brother, this isn't what truly angered him.
Instead, it was his perception that T'Challa wasn't willing to do what it took to protect Wakanda. When Hunter reentered the Black Panther's life in 1999's "Black Panther" #4-12, he desperately attempted to convince T'Challa to command the Hatut Zeraze as his father had, but once it became clear that T'Challa would never do this, Hunter decided his brother no longer deserved to be king — attempting to kill T'Challa and take the throne for himself. If T'Challa was willing to do whatever it took, Hunter would have served him, but since he is not willing, then someone who is must be king. In his mind, it might as well be the White Wolf.