I think that's because of some rumours saying that they are barbarous/unreasonable. And if you combine that with the rule of "Play safe", you get a bunch of ex

I think that's because of some rumours saying that they are barbarous/unreasonable. And if you combine that with the rule of "Play safe", you get a bunch of externally-acquired stereotypers. The thing make it even worse is that, in China, you don't meet normal Tibetans and Uyghurs every day. Many Han people get their first impression of Tibetans/Uyghurs from the those fake ones who trying to sell scam medicine and food. The government did almost nothing to those fakers. What they could do? Confiscate them could result some distorted news and even more rumours. And if the administration got unlucky and confiscated the real deal, then that will be really really bad for them. BTW, the company can be sued for such discrimination. But it's FoxConn, the Sweatshop of IT industry, maybe it just simply too unworthy to do so.