“Diversity of thought”? Are you kidding?
The term “Diversity” refers to people of all races, sexual orientations and gender-based mental illnesses all thinking and saying exactly the same thing!
You’ve defined it well.
Diversity of thought is the antithesis of this definition. The very idea that people can agree on some things and disagree on others seems to be unimaginable, and not at all allowable.
Thus you get things like the villification of people like Camille Paglia and anyone else who doesn’t follow the script.