If you work in tech, you most certainly have a few Chinese citizens as coworkers and colleagues. Talk to them about what life is like if you're curious, don't rely on "60 minutes".
TikTok in China may be moderated but only to keep anything controversial from the government perspective off. I've seen this myth floating that somehow tiktok in China is much more wholesome, which is ridiculous. As far as the ill effects of social media, TikTok is arguably worse in China as it's almost entirely people trying to sell things and make a quick buck, flooded with get rich quick schemes and scams.
All of the things mentioned in that 60 minutes video can be found in the US version of TikTok, there is plenty of educational content. The idea that everyone in China is watching scientific experiments on tiktok while its corrupting American youth is ridiculous.