I don't know man?

I mean, right or wrong, it's obviously because they want to sell their movies and merchandise in China. The level of Chinese investment in the Fast and Furious franchise could be billions. It could be zero. (Probably is zero.) But that's irrelevant to whether or not the people who make those movies want to get that Chinese box office money. They want that money anyway, so they go out of their way to stay in good standing in China.

Should famous actors be willing to forego getting any money from the Chinese market to support whatever cause? Well, if they believe in the cause, then yes. But what we're discovering is that most people and companies don't actually believe in these causes, they were just supporting those causes to be chic, or popular. Like most everyone else in America, and the world for that matter, what they really believe in, is money.

Which, given behaviors observed repeatedly in American and world history, shouldn't really come as any big surprise I suppose.