You have to give some credit to Viacom, the media company, for allowing the show to air. Viacom owns Comedy Central, MTV, Paramount Pictures, DreamWorks, and CBS among other media properties. They certainly have business interests in China.
I'm waiting to see if the other shoe will drop or not. The latest numbers about Viacom's revenue by country that I can find are from 2014, where the US and Europe account for 90% of their revenue (https://csimarket.com/stocks/segments_geo.php?code=VIA). Seeing as how Viacom was trying to sell its majority stake in their TV businesses in China earlier this year, maybe they just won't care about blowback from China.
I wonder if they were aware of the controversial nature of the episode. I’d bet really money, though, Viacom et. al. wouldn’t hesitate for a second to censor South Park if it starts hurting their bottom line.
Outrage attracts eyeballs. This is good for their bottom line.