Honestly...why shouldn't they?
What's the point in being critical of China when the entire apparatus and society around you is quadrupling down on that effort?
You can be neutral if you want. Just remember that if 95% of the population has an opinion value of -50, and you have a neutral "I'm so enlightened and criticize everything" value of 0, the average isn't 0. Instead it ends up being -49. (and that's generous, since way less than 5% of the population actually has fair views on China)
Lauren Southern explained in two pictures:
https://i.imgur.com/20vNQUe.jpg
https://i.imgur.com/2Z7aJNS.png
https://i.imgur.com/xDlbDOR.jpg
ALL POLITICS, NO EXCEPTIONS