Regarding Xinjiang - Arab League nations have a huge financial interest in staying on China's good side. I worry that the billions of dollars of investment creates a conflict of interest. It makes it difficult to see them as trustworthy in this particular matter.

Its interesting to me that you asked about international investigations, but when they were provided, you found a way to reject it (saying that global south countries are inherently untrustworthy because of financial incentives.)

Like, what you asked for was provided. It was just not from countries that count as "international community" to you.