Not sure that's actually true. Valeris herself points out that Chang is untrustworthy and dishonorable, since he conspired with her to kill Gorkon.
And as far as Gorkon goes, he doesn't advocate genocide. He doesn't hold an entire species responsible for the sins of individuals. He doesn't toss around racial slurs. That puts him a step above Scotty, Chekov, and well above Kirk.
And as far as Gorkon goes, he doesn't advocate genocide. He doesn't hold an entire species responsible for the sins of individuals. He doesn't toss around racial slurs. That puts him a step above Scotty, Chekov, and well above Kirk.