You’re sort of on to something. The idea is that after hundreds of years of having skin color implicitly indicate a whether a character is smart/dumb, good/evil, etc, people are over correcting and not wanting to highlight art that follows old stereotypes, even if the natural distribution of personalities means that realistically some black people will be awful.

In time it will even out. For now people are justifiably not wanting to argue about whether their poorly educated, highly violent, dishonest, obsequious black character is bravely demonstrating that all races can be terrible, and not just a lazy racist stereotype like we’ve seen over and over for the past hundreds of years.