I think you're overreacting. I'm a white guy, and this didn't stand out to me one bit. He actually makes a good point.

Let's try the substitution test

"before some stupid black girl tries to be a hero"

It's usually best to not pair gender and race with a pejorative.

Isn’t the author a white male?

If the author was a black woman, I think your substituted statement would be more of a commentary on how she perceives her own role in society.

There are many Black, Latino, Asian, and White writers that will comment on their own ethnic and cultural background in their writing.

only apply to American, and the rest of world don't give a concern for this.

It’s an unfortunate phrase (but tongue in cheek) and it’s worth reading beyond that. Author writes in a very conversational style but full of anecdotes and insights. Id say it’s worth reading. Overall gives an impression of what one might expect there as a visitor as well as projecting if one lived there.

Interestingly, the chairman of Xinjiang is Shohrat Zakir, an ethnic Muslim Uighur who was sent to a re-education camp back in the 1970s.

Re-educated he was, for sure