I think you're somewhat missing the idea here. It's _not_ saying that China-sensitive topics are less popular on TikTok than Insta. It's saying that the differe

I think you're somewhat missing the idea here. It's _not_ saying that China-sensitive topics are less popular on TikTok than Insta. It's saying that the difference between TikTok and Insta is _hugely greater_ for China hot-button issues than it is for other topics. It doesn't really matter how the hash tags are chosen; the fact that this is uniformly true, by a lot, for all the obvious hash tags you might pick is damning evidence.