To answer your question just about as angry as any other major social media is about it these days? Right now the sentiment on TikTok is very strongly anti Isreal and outrage over the current genocide. I don't know why you just assume they're all over there praising China or whatever. China doesn't come up there any more than here or other social media. China has their own version of the app where I assume their own censorship is applied.
Unless you want to pretend that lemmy or other social media is actively discussing the Uyghurs right now I don't think this is a very valid point. You're just using their suffering to feel superior when you probably haven't even thought about them in who knows how long before now. You can search for them in TikTok and there are plenty of videos criticizing China about it.
It's not hard to be informed and it's incredibly hypocritical of you when you couldn't even be bothered to fact check your own assumptions.
It's not even just an app full of kids or even dancing. If it ever was that was well before my time. I'm sure it still exists but it never makes it to me. It's full of young adults and millennials these days. Other than the outrage over the genocide by Isreal another current big drama going around is about NC rep Jeff Jackson because he got a huge following on TikTok and then voted to ban it. There's also a big thing about boycotting kellogs and we've been pretty active in discussing businesses that are stifling unions. Hell, half the front page of reddit is just badly cropped TikTok videos these days anyway lol
Well, ok. I lied. Sometimes I do get dancing videos: https://www.tiktok.com/t/ZTLFVoyUw/