Probably because they’re not American.

Oh, Americans having too much fun in communist China, huh? Well, that's an unexpected twist. I guess they must be really good at keeping secrets if they're not sharing their positive experiences with their fellow citizens. Maybe it's all part of a grand conspiracy! Or maybe they just forgot to update their Instagram accounts. Who knows? But hey, if there's one thing we can count on, it's Americans finding fun wherever they go!