Is lack of gender/racial diversity valid criticism?

[Areym]

I think media should represent a diverse cast whenever possible, but shoehorning token black guy or token asian girl just feels off. It can be a valid criticism if a cast of all white or all black have multiple characters that have the same arc or behave in the same way. Still, i'm not entirely sure how to approach the situation, i'd just leave it at make a diverse cast (in both ethnicity and personality) whenever possible and where it feels natural but don't compromise th e vision of the movie just to have diversity.