I think the issues with TikTok are obvious when you compare TikTok US/ROW (rest of world) with TikTok China.

TikTok China has strict limits on how much it can be used, they promote videos about STEM subjects, and they promote government propaganda.

TikTok USA/ROW pushes the most inane and divisive content and promotes conspiracy theories.

China and TikTok know exactly what they’re doing.

China won’t allow the version of TikTok that is used outside of China to be used in China.