Racism is worse, because it’s about community - us against them. It provides a focal point for anger and action that doesn’t require self reflection or personal growth.
Misanthropy … Have you met our species? Violent, destructive, shortsighted, tribalistic apes swarming across their only home devouring it resources and destroying their own habitat with careless abandon.
Individual humans - we can be amazing. Humans at moments when we overcome our tribalism and selfishness - wonderful. But humankind? Overall, we suck. Misanthropy just realism.