Being mindful of diversity was intentional… misrepresenting historical figures was not.
This is a complex issue that people want to frame in black/white terms. And giant companies are going to err on the side of caution because that is just what big companies typically do (from a corporate PR perspective the reputational consequence for releasing a model that is overly PC is much less than the reputational consequence for releasing a model that turns out to be racist, toxic, or prejudiced).