Think because it's not convenient when you want to do business with China. Lots of people care, just not the ones that matter.

When someone points it out the propaganda ministry makes sure an example is made:

https://www.voanews.com/a/east-asia-pacific_voa-news-china_hm-vows-regain-customers-after-backlash-over-uyghur-comments/6204186.html