Yes you did. That's what the entire article does!

I'm attacking that the idea that "whiteness" describes behaviour or belief structure. Particularly such that any deviation from the belief structures or behaviours of what she thinks your colour should hold to, mean that you must somehow be less what you are.

There are no merits in that idea. When you strip that idea away, all she's written is that people of colour don't all think and act the same way. Which isn't a revalation to anybody who isn't racist and/or stupid.